Tree Swallow
Tachycineta bicolor
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderPasseriformes
- FamilyHirundinidae (Swallows and Martins)
- GenusTachycineta (Tachycineta Swallows)
- SpeciesTachycineta bicolor (Tree Swallow)
The tree swallow (Tachycineta bicolor) is a migratory bird of the family Hirundinidae. Found in the Americas, the tree swallow was first described in 1807 by French ornithologist Louis Vieillot as Hirundo bicolor. It has since been moved to its current genus, Tachycineta, within which its phylogenetic placement is debated. The tree swallow has glossy blue-green upperparts, with the exception of the blackish wings and tail, and white underparts. The bill is black, the eyes dark brown, and the legs and feet pale brown. The female is generally duller than the male, and the first-year female has mostly brown upperparts, with some blue feathers. Wikipedia →
Closest Relatives at Nahanni National Park
Violet-green Swallow
Tachycineta thalassina
Cliff Swallow
Petrochelidon pyrrhonota
Barn Swallow
Hirundo rustica
Bank Swallow
Riparia riparia
White-crowned Sparrow
Zonotrichia leucophrys
Dark-eyed Junco
Junco hyemalis
Yellow-rumped Warbler
Setophaga coronata
Wilson's Warbler
Cardellina pusilla
Swainson's Thrush
Catharus ustulatus
Lincoln's Sparrow
Melospiza lincolnii
Common Yellowthroat
Geothlypis trichas
Ruby-crowned Kinglet
Regulus calendula
📅 Monthly Probability
Fewer than 5 records of Tree Swallow at Nahanni National Park — not enough to chart months honestly.
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there