Galleries » Bird Galleries » Swallows » Tree Swallow

Tree Swallow

Tachycineta bicolor

The Tree Swallow breeds in North America and winters in Mexico, Central America and the Caribbean. Historically these birds have used natural cavities in trees for nesting, but they have learned to exploit bluebird nesting boxes.

While insects comprise most their food base, they can survive on plant based food such as berries. In winter this strategy helps get them through cold snaps, and factors in to being able to survive winters further north than other swallow species.

Extensively studied, the Tree Swallow is considered as a “model organism”. Close examinations of these birds have led to revelations about other species.

Click map markers to reveal further information