Cranes undertake extraordinary migrations that expose them to a gauntlet of threats. Understanding crane welfare during migration reveals how human activities create welfare challenges for these remarkable birds.
The welfare of migratory cranes is inseparable from the condition of the habitats and flyways they depend on. Individual cranes that collide with unmarked power lines die immediately or suffer serious injury. Those that find stopover habitats degraded or disturbed cannot adequately refuel for the next leg of migration, potentially arriving at breeding or wintering grounds in poor body condition. Hunting pressure along flyways represents both individual welfare events and population pressure on already stressed populations. The extraordinary effort to teach captive-reared whooping cranes migration routes using ultralight aircraft is both a conservation and welfare intervention - giving individual birds the ability to survive in the wild rather than remaining dependent on captive facilities.