Boreal Chickadee

Poecile hudsonicus

The boreal chickadee is a small passerine songbird in the tit family Paridae. It is found in the boreal forests of Alaska, Canada and the northern United States and remains within this range all year. This bird is known for its high pitched trill patterns used in communication with other birds and food storage habits in preparation for winter months. Source

Where it is now

In the last 8 weeks this bird was recorded 83,153 times across 34 areas (each area is a 5 degree square).

See the Boreal Chickadee on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 21°C (typically 16 to 22°C, from 10 areas).

Over the weeks it was present in the past year, its centre in North America ranged from 53°N in February to 61°N in April, about 900 km apart.

Arrival dates

The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.