Trump’s wall would seal off critical migration corridors and slice through essential habitat – fragmenting populations and isolating animals from each other and from resources that are critically important to their survival. In addition,

• At least 89 endangered or threatened species and 108 migratory bird species will come under immediate threat from wall construction;
• Recovery of two critically endangered species that regularly cross the border – jaguars and Mexican gray wolves – will be in serious jeopardy;
• Migratory bird habitat will be destroyed and some species like the ferruginous pygmy owl – will be unable to fly across what could be 30-foot barriers; and
• Pristine wildlife refuges and conservation lands, including the Lower Rio Grande and Buenos Aires national wildlife refuges and the Otay Mountain Wilderness, will be permanently marred as whole sections are destroyed and walled off forever.

On top of it all, the Trump administration could exempt the border wall’s construction from ever having to comply with environmental protections like the Endangered Species Act.

Building a massive, impenetrable barrier along the U.S.-Mexico border would wreak havoc on wildlife, critical habitat and communities. For many species, it would be the end of the road.