17 Facts About Tree swallow

Tree swallow is a migratory bird of the family Hirundinidae.

The tree swallow has glossy blue-green, with the exception of the blackish wings and tail, and white.

The tree swallow is sometimes considered a model organism, due to the large amount of research done on it.

The effect of disease can become stronger as a tree swallow gets older, as some parts of the immune system decline with age.

Tree swallow was described as Hirundo bicolor by Louis Pierre Vieillot in his Histoire naturelle des oiseaux de l'Amerique Septentrionale, published in 1807.

The tree swallow is called the white-bellied swallow for its white underparts.

How exactly the tree swallow is related to other members of Tachycineta is unresolved.

The juvenile tree swallow can be distinguished by its brown upperparts and grey-brown-washed breast.

Natal dispersal is common in the tree swallow and occurs more frequently than breeding dispersal.

Tree swallow then makes with the female while holding her neck feathers in his bill and standing on her slightly outstretched wings.

The tree swallow is likely an income breeder, as it breeds based on food abundance and temperatures during the laying season.

Tree swallow eats mostly insects, with some molluscs, spiders, and fruit.

Tree swallow is vulnerable to various parasites, such as the blood parasite Trypanosoma.

Tree swallow is considered to be least concern by the International Union for Conservation of Nature.

In some parts of the US, the range of this Tree swallow has extended south, likely due to changes in land use, the reintroduction of beavers, and nest boxes installed for bluebirds.

The tree swallow is negatively impacted by the clearing of forests and the reduction of marshes, the latter reducing the habitat available for wintering.

Acidification of lakes can force this Tree swallow to go relatively long distances to find calcium-rich items, and can result in chicks eating plastic.