Wildlife Corridors: Connecting Habitat for Animal Welfare and Conservation

Wildlife corridors connect fragmented habitat patches, allowing animals to move, migrate, and maintain genetic exchange. Corridors reduce road mortality, improve gene flow, and support behavioral needs of wide-ranging species.

Key Facts

Habitat fragmentation affects over 70% of remaining natural habitat globally; corridors partially restore connectivity
The Path of the Pronghorn in Wyoming is the longest land migration in the contiguous US at 150 miles; highway crossing infrastructure supports this movement
Wildlife crossing structures over and under highways reduce large mammal road mortality by 70-95% at targeted locations
Genetic connectivity maintained by corridors prevents inbreeding depression that reduces population health and welfare
Mountain lions in Southern California are threatened by genetic isolation from highways; crossing structures are under construction
The Yellowstone to Yukon Conservation Initiative aims to protect a 3,200 km corridor for wide-ranging species
Green infrastructure in urban areas including parks and garden chains provides urban wildlife corridors
Climate change corridors enabling species range shifts are an emerging conservation priority for the next century

Welfare Considerations

Wildlife corridors address welfare at both individual and population levels. Individual animals crossing roads face traffic mortality and injury; wildlife crossings reduce this direct welfare harm. Population-level welfare is affected by genetic isolation that produces inbreeding depression, immune compromise, and reduced disease resistance that causes chronic welfare problems in isolated populations. The behavioral welfare dimension is also significant: wide-ranging species including mountain lions, elk, and wolves that are confined within habitat islands by roads and development cannot express their natural ranging behavior, causing behavioral restriction analogous to the frustration of captive animals in inadequate enclosures. Corridors restore the behavioral freedom that is a welfare need for these species.

What You Can Do

Support the Wildlife Conservation Society and Nature Conservancy programs funding wildlife corridor planning
Advocate for wildlife crossing infrastructure in road and highway planning in areas with known wildlife movement
Donate to the Path of the Pronghorn and similar specific corridor projects protecting critical migration routes
Support urban green corridor planning that connects parks for urban wildlife movement
Engage state and national transportation agencies about incorporating wildlife crossing requirements in infrastructure funding
Learn about wildlife corridors in your region and advocate for their protection from development