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Tree Swallow

December 11, 2021

The tree swallow is a small beautiful little bird that is found across the Americas. You will be able to recognize this lovely bird by specific characteristics that include the following:

  • Its most visible upper body feathers are a shiny blue-green color. It has a black bill, brown legs and feet and its eyes are dark brown.
  • The male tree swallow is far more colorful than the dowdier female bird.
  • Tree swallows breed in parts of Canada. The U.S. breeding period now occurs in May and lasts through to July. Breeding used to start later but has changed due to climate changes.
  • Females produce two to eight eggs that are pure white and incubate these for two weeks.
  • Hatching takes place asynchronously, allowing the mother to cope with their feeding and any food shortages.
  • They eat insects, fruit, mollusks, and spiders.
  • Chicks become fully-fledged between 18 and 22 days after hatching.
  • Tree swallows are primarily monogamous, but a small 8% of males can be polygynous.
  • Adult tree swallows are vulnerable to parasitic infections, which can cause death as they weaken with age.
  • Parasites seldom affect young chicks.
  • These birds have a wingspan of just under 12 inches, which can reach close to 14 inches. They weigh between 0.6 and 0.9 ounces and grow to lengths of about 4.7 and 5.5 inches.

In the winter months, you will often see this bird along the southern coasts of the U.S., Panama, the Gulf Coast, and the northwestern coastline of Southern America. It also winters in the West Indies.


  1. Robert

    I love the animal of the day. I am concerned that the area I live in has virtually no song birds. When we first moved her, there were bluebirds, blue jays, sparrows, cardinals and all kinds of birds. Now there are pretty much none. We have a few crows and hawks along with a few water fowl, cranes ,ducks ,geese, but no song birds. Is there something I can do?

  2. Denise

    Thank you for the info. Do they compete with bluebirds for boxes?


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