Species: Tachycineta bicolor
Tree Swallow
Species
Show on Lists
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Aves
Order
Passeriformes
Family
Hirundinidae
Genus
Tachycineta
NatureServe
Classification
Other Global Common Names
Golondrina Bicolor - hirondelle bicolore
Informal Taxonomy
Animals, Vertebrates - Birds - Perching Birds
Formal Taxonomy
Animalia - Craniata - Aves - Passeriformes - Hirundinidae - Tachycineta - Sometimes placed in the genus IRIDOPROCNE (AOU 1983). See Sheldon and Winkler (1993) for information on intergeneric phylogenetic relationships of Hirundininae based on DNA-DNA hybridization.
Ecology and Life History
Migration
false - false - true - Main migration routes include U.S. east coast, Mississippi Basin, along Rockies (see Turner and Rose 1989). Migrates northward early, February-March in most of U.S. (Terres 1980). Large numbers of south-bound migrants pass through Florida in late fall, beginning in late September or October (Smith and Smith 1990). Irregularly rare to locally common migrant in Costa Rica, early September-late October and March-April (Stiles and Skutch 1989).
Non-migrant
false
Locally Migrant
false
Food Comments
Catches flying insects in the air over land or water. Also forages on the ground for beetles, bugs, beach "fleas", and spiders. Occasionally eats some seeds and fruits (e.g., MYRICA fruits during inclement weather when insects unavailable, especially in fall in the eastern coastal U.S.) (Place and Stiles 1992).
Reproduction Comments
Egg dates: late April-late June in south, early May to mid-June in north. Clutch size usually is 4-6. Incubation, typically by fenale, lasts 13-16 days. Altricial young are tended by both sexes, leave nest 16-24 days after hatching (Terres 1980), receive little care after that. Inclement weather and resulting scarcity of food may result in high nestling mortality in some years. In Ontario, productivity was reduced near experimentally acidified lakes (St. Louis and Barlow, 1993, Can. J. Zool. 71:1090-1097). Generally monogamous, but sometimes polygynous if food is superabundant. Nests alone or in loose colony.
Ecology Comments
Many may congregate where food abundant or in roosts when weather cold. When not breeding, flocks may contain 1000s of individuals.
Length
15
Weight
20
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
1996-12-02
Global Status Last Changed
1996-12-02
Other Status
LC - Least concern
Distribution
Conservation Status Map
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Global Range
BREEDS: western Alaska to Newfoundland, south to southern California, Nevada, Arizona, New Mexico, northeastern Louisiana, western Mississippi, Tennessee and North Carolina, casually to southern states. Range has expanded in southeastern U.S. in recent decades, perhaps facilitated by land clearing, impoundments, beaver reintroduction, and use of bluebird nest boxes (Lee 1993). WINTERS: primarily from southern California and extreme southern U.S. through Mexico to Honduras, Nicaragua and Costa Rica, sporatically to Panama; Bahamas and Greater Antilles (Puerto Rico: rare), rarely to northern South America (Ridgely and Tudor 1989).

