Why do birds migrate? Birds migrate to move from areas of low or decreasing resources to areas of high or increasing resources. The two primary resources being sought are food and nesting locations.

What are the reasons for bird migration?

Migratory birds fly hundreds and thousands of kilometres to find the best ecological conditions and habitats for feeding, breeding and raising their young. When conditions at breeding sites become unfavourable, it is time to fly to regions where conditions are better. There are many different migration patterns.

What are migrating songbirds?

These birds—dozens of species of warblers, thrushes, vireos, orioles, flycatchers, tanagers, grosbeaks, and more—migrate mostly at night. They take off just after dark, fly through the night, and land near dawn, if they're over land at that point (if they're over water, of course, they keep going).