Abstract
I banded 36 Boreal Chickadees (Poecile hudsonicus) and had 27 recaptures for a total of 63 encounters in Anchorage, Alaska, from 1990-1995. Boreal Chickadees mean weight and fat accumulation did not vary between seasons; overall annual mean weight was 11.4 g. During fall and winter measured weight increased during daylight hours, but in summer birds maintained a steady weight throughout the day. Winter weight gain throughout the day was calculated to equal about 11.7% of base body weight. Wing, tail, and tarsal measurement averages and ranges are provided. Body, crown, and remige molt was heaviest in late July and August, but light body molt continued into October. This note contributes to a scarcity of avian daily weight patterns in locations with extreme seasonal changes in photoperiod.
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Recommended Citation
North, Michael R.
(2025)
"Boreal Chickadee Notes from Alaska,"
North American Bird Bander: Vol. 50
:
Iss.
1
, Article 4.
Available at:
https://digitalcommons.usf.edu/nabb/vol50/iss1/4