Night Migration (Warblers)

“Night Migration (Warblers)”

20″ x 30″

Graphite on Paper

SOLD

The majority of land birds migrate at night. Most of these birds live in woodlands and other sheltered habitat. They are not extremely agile fliers so need dense habitat to avoid bird predators. Migration at night means fewer predators. The air in the atmosphere is usually less turbulent than during the day and the air is cooler at night. A migrating bird produces excess heat that needs to be releasedand the colder the air temperature, the more quickly that heat can be dumped.