Migratory bird conservation needs international cooperation as birds cross borders.

Migratory birds cross numerous national borders, requiring international cooperation for their conservation. Political lines are insignificant to species like warblers traveling between tropical areas and North America. Conserving these species and addressing cross-border environmental issues necessitates collaboration. Effective plans for birds like the declining prothonotary warbler involve multiple countries and interagency work. Conservation efforts are compromised when countries reduce cooperation with allies. Protecting migratory birds relies on collaborative international action, often supported by government funding and nonprofit efforts. Weakening agreements such as the century-old Migratory Bird Treaty Act undermines shared bird population protection among signatory nations like the U.S., Canada, and Mexico. Allowing harm to birds without penalty can diminish cooperation from other countries. Bird conservation is complex due to their mobility and depends on maintaining international alliances.