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Road ecology blog: Concrete barrier wall, Fisherman Island National Wildlife Refuge

January 14, 2019 - Road ecology blog: Concrete barrier wall along a section of Hwy 13, Fisherman Island National Wildlife Refuge, Virginia.
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Road ecology blog: Vegetation maintenance adjacent to turtle barrier

January 13, 2019 - Road ecology blog: Pamela Denmon (USFWS) demonstrates where the plastic corrugated pipe should be located with short veg...
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Road ecology blog: Plastic corrugated pipe for diamondback terrapins damaged by mowing

January 12, 2019 - Road ecology blog: Plastic corrugated pipe designed as a barrier to keep Northern diamondback terrapins (Malaclemys terr...
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Road ecology blog: Barrier for diamondback terrapin (turtles), Fisherman Island, Virginia

January 11, 2019 - Road ecology blog: Plastic corrugated pipe (6 inches diameter) staked in ground with rebar, Fisherman Island National Wi...
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Road ecology blog: Amphibian tunnels with open slotted roofs and barrier wall

December 09, 2018 - Road ecology blog: Images below: Amphibian tunnel with open slotted roof (ACO) and barrier or wall for amphibians, inte...
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Road ecology blog: Common toad (Bufo bufo) screens and buckets, The Netherlands

December 07, 2018 - Road ecology blog: Common toad (Bufo bufo) screens and buckets, Rijksstraatweg Elsterstraatweg N225 just west of Elst, U...
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Road ecology blog: Solid plastic fence (Animex) designed as a barrier for herpetofauna

December 06, 2018 - Road ecology blog: Temporary demonstration installation of solid plastic fence (Animex) designed as a barrier for herpet...
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Wildlife warning sign, deer migration area, next 2 miles, US Hwy 93, near Wells, Nevada, USA

May 11, 2018 - Wildlife warning sign, deer migration area, next 2 miles, US Hwy 93, near Wells, Nevada, USA Click here for other ima...
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Wildlife overpasses, US Hwy 93, near Wells, Nevada, USA

May 07, 2018 - Image below: Wildlife overpass (south), US Hwy 93, near Wells, Nevada, USA Image below: Wildlife overpass (north), US...
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Warning sign, deer migration area, next 3 miles, Utah, USA

March 26, 2018 - Warning sign, deer migration area, next 3 miles, Utah, USA Note the mule deer carcass right in front of the sign....
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Warning sign, speed limit 30 mph, watch for wildlife, Colorado, USA

March 22, 2018 - Warning sign, variable message sign, speed limit 30 mph, watch for wildlife, Colorado, USA Click here for other image...
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Wildlife jump-out, Utah, USA

March 20, 2018 - Wildlife jump-out, Utah, USA Click here for more images of wildlife jump-outs or escape ramps. Like Marcel Huijser P...
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Road ecology blog: Wildlife guard at access road, Utah, USA

March 19, 2018 - Road ecology blog: Wildlife guard at access road, Utah, USA Click here for other images of wildlife guards, cat...
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Road ecology blog: Wildlife overpass, Argentina

October 13, 2017 - Wildlife overpass, Ruta 101, Misiones, Argentina For other images of wildlife overpasses (wildlife only) click here....
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Road ecology blog: Wildlife overpass, Misiones, Argentina

October 05, 2017 - Road ecology blog: Wildlife overpass, Ruta 101, Misiones, Argentina. There are no fences associated with this overpass...
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Road ecology blog: Wildlife overpass, Ruta 101, Misiones, Argentina

October 03, 2017 - Road ecology blog: Wildlife overpass, Ruta 101, Misiones, Argentina For other images of wildlife overpasses (wildli...
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Road ecology blog: A kilometer post, Nuevo Xcan-Playa Del Carmen highway, Mexico

January 13, 2017 - Road ecology blog: A kilometer post, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico Click here for more im...
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Road ecology blog: Canopy crossings for arboreal mammals, Mexico

January 11, 2017 - Road ecology blog: Canopy crossings for arboreal mammals, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico. The...
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Road ecology blog: Wildlife fence along Nuevo Xcan-Playa Del Carmen highway, Mexico

January 10, 2017 - Road ecology blog: Wildlife fence along Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico. The previous road ec...
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Road ecology blog: Wildlife underpasses, Nuevo Xcan-Playa Del Carmen highway, Mexico

January 09, 2017 - Road ecology blog: Wildlife underpasses, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo, Mexico This relatively new...
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Researchers at work: Marcel Huijser checks out wildlife underpass, Mexico

January 06, 2017 - Researchers at work: Marcel Huijser checks out a wildlife underpass, Nuevo Xcan-Playa Del Carmen highway, Quintana Roo,...
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Road ecology blog: Wildlife warning sign for lizards (Iguanas), Cancun, Quintana Roo, Mexico

December 23, 2016 - Road ecology blog: Wildlife warning sign for lizards (Iguanas), Cancun, Quintana Roo, Mexico Click here for other ima...
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Road ecology blog: Wildlife warning signs for bighorn sheep (Ovis canadensis), Montana, USA

November 19, 2016 - Road ecology blog: Wildlife warning signs for bighorn sheep (Ovis canadensis), Montana, USA. Click here for other ima...
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Road ecology blog: Mitigation for bighorn sheep, near Thompson Falls, Montana, USA

October 27, 2016 - Road ecology blog: Mitigation measures for bighorn sheep, near Thompson Falls, Montana, USA. This section of Hwy 200 nee...
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Road ecology blog: Roadside shrine, Puerto Iguazú, Misiones, Argentina

January 24, 2016 - Road ecology blog: Roadside shrine, Puerto Iguazú, Misiones, Argentina. Click here for images of roadside shrines. Lik...
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Road ecology blog: Wildlife warning sign for South American tapir, Argentina

January 23, 2016 - Road ecology blog: Wildlife warning sign for South American tapir (Tapirus terrestris), Puerto Iguazú, Parque Nacional I...
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Road ecology blog: Speed bump to reduce collisions with wildlife, Argentina

January 22, 2016 - Road ecology blog: Speed bump to reduce collisions with wildlife, Puerto Iguazú, Parque Nacional Iguazú, Misiones, Argen...
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Road ecology blog: Wildlife warning signs, Misiones, Argentina

January 21, 2016 - Road ecology blog: Wildlife warning signs, Misiones, Argentina. Click here for other images of other wildlife or livest...
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Road ecology blog: Roadkilled Argentine black and white tegu (Salvator merianae), Argentina

January 20, 2016 - Road ecology blog: Roadkilled Argentine black and white tegu (Salvator merianae), Puerto Iguazú, Parque Nacional Iguazú,...
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Road ecology blog: Wildlife warning sign for South American tapir, Argentina

January 19, 2016 - Road ecology blog: Wildlife warning sign for South American tapir (Tapirus terrestris), Puerto Iguazú, Parque Nacional I...
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Road ecology blog: Roadkilled South American coati (Nasua nasua), Argentina

January 14, 2016 - Road ecology blog: Roadkilled South American coati (Nasua nasua), Argentina. Click here for images of animals alive on...
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Road ecology blog: Wildlife warning signs for South American coati, Argentina

January 13, 2016 - Road ecology blog: Wildlife warning signs for South American coati (Nasua nasua), Puerto Iguazú, near Parque Nacional Ig...
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Road ecology blog: Speed reduction zone for wildlife, Misiones, Argentina

January 11, 2016 - Speed reduction zone for wildlife, Puerto Iguazú, near Parque Nacional Iguazú, Misiones, Argentina. The posted maximum s...
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Road ecology blog: Canopy crossings for arboreal mammals (RJ-163) Rio de Janeiro, Brazil

November 27, 2015 - Road ecology blog: Canopy crossings for arboreal mammals, "park road" (estrada-parque) Capelinha-Mauá (RJ-163), near Res...
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Road ecology blog: Warning sign for Louisiana black bear, I-20 near Delhi, Louisiana, USA

October 14, 2015 - Road ecology blog: Warning sign for Louisiana black bear (Ursus americanus luteolus), I-20 near Delhi, Louisiana, USA....
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Road ecology blog: Elevated roadway, US Hwy 90, near Franklin, Louisiana, USA

October 05, 2015 - Road ecology blog: Elevated roadway, US Hwy 90, near Franklin, Louisiana, USA. Click here for more images of long bridg...
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Road ecology blog: Median barrier along a highway, SP-225, west of Brotas, São Paulo, Brazil

August 07, 2015 - Road ecology blog: Median barrier along a highway, SP-225, west of Brotas, São Paulo, Brazil. Click here for more image...
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Road ecology blog: Wildlife underpass that is not level with the surrounding landscape

August 05, 2015 - Wildlife underpass that is not level with the surrounding landscape, SP-225, near Brotas, São Paulo, Brazil. The underpa...
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Road ecology blog: Gaps in wildlife fences, Brazil

August 04, 2015 - Road ecology blog: Gaps in wildlife fences, Brazil. Click here for images of wildlife fencing. Click here for images o...
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Road ecology blog: Basin for runoff from road

July 23, 2015 - Road ecology blog: Basin for runoff from road, SP-225 motorway, São Paulo, Brazil. This is a better alternative than du...
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Road ecology blog: Argentine black and white tegu roadkill with eggs smeared on pavement

July 17, 2015 - Road ecology blog: Argentine black and white tegu (Salvator merianae) roadkill with eggs smeared on pavement, SP-225 mot...
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Road ecology blog: Researchers at work, Argentine black and white tegu, Brazil

July 16, 2015 - Road ecology blog: Researchers at work, Argentine black and white tegu (Salvator merianae) roadkill, SP-225 motorway, Sã...
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Road ecology blog: Argentine black and white tegu (Salvator merianae) roadkill, Brazil

July 16, 2015 - Road ecology blog: Argentine black and white tegu (Salvator merianae) roadkill, SP-225 motorway, São Paulo, Brazil. Cli...
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Road ecology blog: maintenance and design issues with wildlife fences, Brazil

July 14, 2015 - Image below: a maintenance problem: An animal (probably a nine-banded armadillo (Dasypus novemcinctus)) dug a gap under...
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Road ecology blog: Disintegrated concrete fence post and wildlife fence, São Paulo, Brazil

July 13, 2015 - Image below: Road ecology blog: Disintegrated concrete post of a wildlife fence, SP-225 Motorway, near Brotas, São Paulo...
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Road ecology blog: Capybara-vehicle collisions at stream crossing, Itirapina, Brazil

July 11, 2015 - Image below: Stream culvert (northern stream crossing, Córrego do Geraldo) under two lane road, Itirapina Ecological Sta...
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Road ecology blog: Wildlife warning sign for maned wolf, Itirapina, São Paulo, Brazil

July 11, 2015 - Road ecology blog: Wildlife warning sign for maned wolf, southern stream crossing (Córrego Água Branca), Itirapina Ecolo...
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Road ecology blog: Bridge across stream, Itirapina Ecological Reserve, São Paulo, Brazil

July 10, 2015 - Road ecology blog: Bridge across the southern stream crossing (Córrego Água Branca), Itirapina Ecological Reserve, São P...
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Road ecology blog: Speed reduction, radar, rumble strips, wildlife warning signs, Brazil

March 25, 2015 - Highway RS-486 bisects a forest remnant (Reserva Biológica Mata Paludosa), Rio Grande do Sul, Brazil. The posted speed l...
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Road ecology blog: Tunnel (landscape bridge), Rio Grande do Sul, Brazil

March 23, 2015 - Road ecology blog: Tunnel (landscape bridge) Morro Alto (1837 m long), BR 101, near Aguapés, Rio Grande do Sul, Brazil....
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Audio slide show about mitigation measures along highways

October 22, 2014 - This just came out. An audio slide show in Orion Magazine about mitigation measures for wildlife along highways: http...
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Road ecology blog: Sign advertising the installation of a capybara fence, Brazil

September 07, 2014 - Road ecology blog: Sign advertising the installation of a wildlife fence, fence for the protection from wildlife, (cerca...
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Road ecology blog: Painted warning sign for lizards, Instituto Florestal, São Paulo, Brazil

August 26, 2014 - Road ecology blog: Painted warning sign for lizards, Instituto Florestal, São Paulo, Brazil. Click here for other image...
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Road ecology blog: Wildlife warning sign and road-killed capybara, Brazil

August 25, 2014 - Road ecology blog: Wildlife warning sign and road-killed capybara (Hydrochoerus hydrochaeris), Piracicaba, São Paulo, Br...
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Road ecology blog: Deer crossing warning sign, xing, US Hwy 89, near Gardiner, Montana, USA

July 30, 2014 - Road ecology blog: Deer crossing warning sign, xing, US Hwy 89, near Gardiner, Montana, USA. Click here for images of o...
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Road ecology blog: Wildlife warning sign, variable message sign, Montana. USA

July 28, 2014 - Road ecology blog: Wildlife warning sign, variable message sign, wildlife on roadway, reduce speed 55 MPH, next 12 to 15...
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Road ecology blog: Wildlife warning sign, Watch for wildlife on roadway next 51 miles

July 25, 2014 - Road ecology blog: Wildlife warning sign, Watch for wildlife on roadway next 51 miles, US Hwy 89, near Gardiner, Montana...
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Road ecology blog: Wildlife overpass for pronghorn, near Pinedale, Wyoming

July 18, 2014 - Wildlife overpass (west) for pronghorn (Antilocapra americana) (46 m (150 ft) wide), on the Path of the Pronghorn, Trapp...
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Road ecology blog: Wildlife warning sign, Wyoming, USA

July 16, 2014 - Road ecology blog: Wildlife warning sign, attention, deer crossing, next 2 miles, US Hwy 191, north of Daniel, Wyoming,...
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Road ecology blog: Wildlife overpass (west) for pronghorn, Wyoming, USA

July 15, 2014 - Wildlife overpass (west) for pronghorn (Antilocapra americana) (46 m (150 ft) wide), on the Path of the Pronghorn, Trapp...
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Road ecology blog: Boulders to reduce water velocity, California, USA

May 30, 2014 - Road ecology blog: Boulders to reduce velocity of water running down slope, near Sonora, California, USA. This is at an...
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Road ecology blog: Gopher snake (Pituophis catenifer) roadkill, California, USA

May 23, 2014 - Road ecology blog: Gopher snake (Pituophis catenifer) roadkill, Hwy 49 south of Chinese Camp, California, USA. Click he...
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Road ecology blog: Sepp Jannotta interviews Whisper Means, Flathead Indian Reservation

May 22, 2014 - Road ecology blog: Sepp Jannotta (Montana State University News Service) interviews Whisper Camel-Means (CSKT), US Hwy 9...
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Road ecology blog: Multifunctional underpass, near Sonora, California, USA

May 22, 2014 - Road ecology blog: Multifunctional underpass (road and wildlife), near Sonora, California, USA. Click here for images o...
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Road ecology blog: Street light for bicycle path under wildlife overpass, The Netherlands

April 30, 2014 - Road ecology blog: Street light for bicycle path under wildlife overpass Oud Reemst, south of Otterlo, The Netherlands....
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Road ecology blog: Bicycle path under wildlife overpass "Oud Reemst", The Netherlands

April 29, 2014 - Road ecology blog: Bicycle path under wildlife overpass "Oud Reemst" (about 35 m wide), south of Otterlo, The Netherland...
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Road ecology blog: Sign on overpass, rest area for animals, no access, The Netherlands

April 25, 2014 - Road ecology blog: Sign on wildlife overpass Oud Reemst (about 35 m wide), rest area for animals, no access, south of Ot...
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Road ecology blog: Fence for mouflon, horses and cattle on overpass, The Netherlands

April 24, 2014 - Road ecology blog. Fence on top of wildlife overpass Oud Reemst (about 35 m wide), to keep mouflon, horses and cattle fr...
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Road ecology blog: Pond and root wads at wildlife overpass, The Netherlands

April 23, 2014 - Road ecology blog: Pond and root wads on approach of wildlife overpass Oud Reemst (about 35 m wide), south of Otterlo, T...
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Road ecology blog: Snug fit wildlife fence on wildlife overpass, The Netherlands

April 22, 2014 - Road ecology blog: Snug fit wildlife fence and plank on top of wildlife overpass Oud Reemst (about 35 m wide), south of...
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Road ecology blog: Wildlife overpass "Oud Reemst", The Netherlands

April 21, 2014 - Road ecology blog: Wildlife overpass "Oud Reemst" (about 35 m wide), south of Otterlo, The Netherlands (completed 2012).
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Road ecology blog: Multifunctional overpass Slabroek, A50 motorway, The Netherlands

April 18, 2014 - Multifunctional overpass (wildlife and bicycle / pedestrian / equestrian path) Slabroek, about 15 m wide, across A50 mot...
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Road ecology blog: Snug fit of a gate at a wildlife fence, The Netherlands

April 17, 2014 - Road ecology blog: Snug fit of a gate at a wildlife fence, south of Otterlo, The Netherlands. The snug fit discourages a...
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Road ecology blog: Wildlife fence, south of Otterlo, The Netherlands

April 16, 2014 - Road ecology blog: Wildlife fence, south of Otterlo, The Netherlands. Click here for more images of wildlife fencing....
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Road ecology blog: Nest box behind road sign, Ronan, Montana

April 08, 2014 - Road Ecology blog: Nest box behind road sign, Ronan, Montana. Right-of-way habitat is often good habitat for small mamm...
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Road ecology blog. Voluntary road closure at night for common toads, The Netherlands

April 07, 2014 - Road ecology blog. Wildlife warning sign, Voluntary road closure at night between 5 and 11 pm during spring migration of...
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Road Ecology blog: Seasonal barriers and pittfalls for common toads, The Netherlands

April 02, 2014 - Seasonal amphibian barriers for common toads (Bufo bufo), Soest, The Netherlands. Note that there are pitfalls (buckets)...
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Road Ecology blog: Seasonal warning sign for common toad, The Netherlands

April 01, 2014 - Road Ecology blog: Wildlife warning sign, Seasonal warning sign for common toads (Bufo bufo) during spring migration, So...
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Road Ecology blog: Warning sign, horses and riders crossing highway, The Netherlands

March 28, 2014 - Road Ecology blog: Warning sign, horses and riders crossing highway, near Hilversum, The Netherlands. Click here to vie...
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Road Ecology blog: Blue deer reflectors, N415 near Hilversum, The Netherlands

March 27, 2014 - Road Ecology blog: Blue deer reflectors, N415 near Hilversum, The Netherlands. Note that deer wildlife reflectors or mi...
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Road ecology blog: Wildlife warning sign, near Hilversum, The Netherlands

March 26, 2014 - Road ecology blog: Wildlife warning sign, deer crossing (roe deer Capreolus capreolus), near Hilversum, The Netherlands.
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Road Ecology blog: Street lighting to increase the visibility of moose to drivers, Norway

March 24, 2014 - Road Ecology blog: Street lighting to increase the visibility of moose (Alces alces) to drivers, E6 highway, south of Ri...
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Road ecology blog: Warning sign for crossing skiers, Norway

March 21, 2014 - Road ecology blog: Warning sign for crossing skiers, Hwy 27, south of Rondane National Park, Norway. Note the skier cros...
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Road Ecology blog: Sign: No stopping zone next 14 km. Sensitive wild reindeer area, Norway

March 20, 2014 - Road Ecology blog: Sign: No stopping zone next 14 km. Sensitive wild reindeer (Rangifer tarandus tarandus) area, Hwy 27...
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Road ecology blog: landscape bridges (tunnels) in Norway

March 18, 2014 - Road ecology blog: landscape bridges (tunnels) in Norway. There are no strict rules on how to classify a wildlife cross...
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Road ecology blog: Six wildlife overpasses in Norway

March 17, 2014 - Road ecology blog: Six wildlife overpasses in Norway. For other images of wildlife overpasses click here. For images o...
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Road ecology blog: Moose wildlife fence along the E6 motorway, near Ljugskile, Sweden

March 14, 2014 - Road ecology blog: Moose (Alces alces) wildlife fence along the E6 motorway, near Ljugskile, Sweden. Click here for mor...
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Road Ecology blog: Gradual approach of wildlife overpass, Hwy 69, Ontario, Canada

February 10, 2014 - Road Ecology blog: Gradual approach of wildlife overpass, Hwy 69, Ontario, Canada. Most road ecologists consider it imp...
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Road ecology blog: Barrier for animals on side of wildlife overpass, Ontario, Canada

February 08, 2014 - Road Ecology blog: Barrier for animals, sound and light on top of wildlife overpass, Hwy 69, Ontario, Canada. The barrie...
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Road Ecology blog: Locked gate to access wildlife overpass, Hwy 69, Ontario, Canada

February 07, 2014 - Road Ecology blog: Locked gate to access wildlife overpass (about 30 m wide), Hwy 69, Ontario, Canada. This gate does n...
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Road ecology blog: Top of wildlife overpass with cover, Ontario, Canada

February 06, 2014 - Road ecology blog: Top of wildlife overpass with cover (tree branches and rocks), Hwy 69, Ontario, Canada. Root wads, t...
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Road Ecology blog: No tresspassing sign and wildlife cameras at wildlife overpass

February 05, 2014 - Road Ecology blog: No tresspassing sign and wildlife cameras at wildlife overpass, Hwy 69, Ontario, Canada. Human co-us...
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Road Ecology blog: Art on wildlife overpass, Hwy 69, Ontario, Canada

February 04, 2014 - Road Ecology blog: Art (drawings of animals) on wildlife overpass (about 30 m wide), Hwy 69, Ontario, Canada. I think h...
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Road ecology blog: Wildlife overpass (about 30 m wide), Hwy 69, Ontario, Canada

February 03, 2014 - Road ecology blog: Wildlife overpass (about 30 m wide), Hwy 69, Ontario, Canada. Wildlife overpass (about 30 m wide), a...
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Road Ecology blog: Box culvert for turtles, Hwy 69, Ontario, Canada

February 02, 2014 - Road Ecology blog: Box culvert for turtles, Hwy 69, Ontario, Canada. Turtle underpass, Hwy 69, Ontario, Canada. The tur...
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Road ecology blog: Wildlife guard for tule elk, California, USA

December 13, 2013 - Road ecology blog: Wildlife guard for tule elk (Cervus canadensis nannodes), Point Reyes National Seashore, California,...
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Road ecology blog: Panther traffic, wildlife warning sign, near Naples, Florida, USA

November 14, 2013 - Road ecology blog: Panther traffic, wildlife warning sign, near Naples, Florida, USA. Florida panther (Puma concolor co...
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Road ecology blog: Animal detection system, Tamiami Trail, US Hwy 41, Florida, USA

November 13, 2013 - Road ecology blog: Animal detection system, Tamiami Trail, US Hwy 41, Florida, USA. This animal detection system is des...
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Road ecology blog: Warning sign domesticated Bactrian camels, Gobi, Mongolia

November 01, 2013 - Road ecology blog: Warning sign for domesticated Bactrian camels (Camelus bactrianus), Gobi, Mongolia. Click here for i...
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Linear infrastructure blog: Power lines with markers to reduce bird strikes, Mongolia

October 24, 2013 - Linear infrastructure blog: Power lines with markers for birds to reduce bird strikes, between Hanbogd and Oyu Tolgoi, n...
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Road ecology blog: Wildlife jump-out or escape ramp, Arizona, USA

September 23, 2013 - Road ecology blog: Wildlife jump-out or escape ramp, Arizona, USA. Note the drainage pipe in the retaining wall. Click...
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Road ecology blog: Retaining wall at wildlife underpass, Arizona, USA

September 19, 2013 - Road ecology blog: Retaining wall to allow for a wider flat area at wildlife underpass, Arizona, USA. Click here for mo...
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Road ecology blog: Wildlife jump-out with plank on top, Arizona, USA

September 18, 2013 - Road ecology blog: Wildlife jump-out with plank on top, Arizona, USA. Wildlife jump-out with plank on top, Arizona, USA...
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Road ecology blog: Wildlife underpass, S.R. 260, Arizona, USA

September 16, 2013 - Road ecology blog: Wildlife underpass, S.R. 260, Arizona, USA. Click here for more images of wildlife underpasses. Lik...
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