tree swallow (Tachycineta bicolor)
CONFIRMATION STATUS: Confirmed.
Length: 5 inches
Iridiscent blue-green upperparts
Female duller than male
Juvenile dull brown above and may have hint of a gray breast band
Most often seen flying
Nests in cavities near water
Often found in large flocks
The tree swallow is most similar to the violet-green swallow. The violet-
green swallow has white patches that extend further onto the sides of the
rump, a white area that extends behind and over the eye and greener up-
perparts. Bank and northern rough-winged swallows look similar, espe-
cially in Fall. Bank swallow is smaller, this feature is especially notice-
able as mixed flocks of swallows often sit on telephone wires. Bank has
a dark breast band that is lacking or indistinct in the tree swallow. From
above, bank swallow has a paler rump that contrasts with the darker back
and tail where the tree swallow is uniformly-colored. Northern rough-
winged swallow has a dusky throat and warmer brown upperparts than
the tree swallow. Swallows often call in flight and these calls are excellent
clues to identification.
Migration Status: Short distance migrant
Breeding Habitat: N/A
Nest Location: Mid-story/canopy nesting
Nest Type: Cavity
Clutch Size: 3-8
Length of Incubation: (13-)16 days
Days to Fledge: 20 (16-24)
Number of Broods: 1, rarely 2
Diet: Primarily insects; lesser quantities of fruit
SKY MEADOWS DISTRIBUTION/SEASONAL OCCURRENCE
Relative abundance and seasonal occurrence are indicated in red below.
C - Common: Likely to be present in good numbers in appropriate habitat and season.
U - Uncommon: May be present in appropriate habitat and season, often in low
O - Occassional: Found in appropriate habitat perhaps only a few times per season,
sometimes low numbers.
R - Rare: May not be recorded every year.
Acc - Accidental: Recorded once or twice, may not be expected again for a long time.
Sp - Spring: March, April, May C
Su - Summer: June, July, August C
Fall: September, October, November O
Winter: December, January, February
Crooked Run Valley