Birds of North America
Puzzle 45 · Mountains and Northern Lands · Page 67 in print
Boreal Chickadee
Some Boreal Chickadees nest in cavities with an opening at the top. Most chickadee nest holes instead have a side entrance.
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The words
Balsam Poplar
A tree whose dead wood can hold a nest cavity.
Bark Crevice
A narrow opening pried at with the bill to find food.
Black Bib
The small black throat marking.
Brown Cap
A distinguishing brown crown on the head.
Cinnamon Flank
Warm brown coloration on the bird’s side.
Gargling Call
A vocalization used when confronting intruders.
Gray Collar
A gray band behind the head.
Hover Gleaning
Taking prey from branch tips while briefly hovering.
Insect Eggs
A tiny food source found while searching conifers.
Looping Flight
A circling flight around a tree during courtship.
Ruffle Display
Puffing feathers and wings in a threat display.
Top Entrance
Some nest cavities open at the top, an unusual arrangement among chickadees.
White Pine
A tree in which nests have been recorded.
Wing Quivering
A courtship motion by either sex.
Yellow Birch
A tree in which nesting cavities may occur.
Sources
- Boreal Chickadee: Life HistoryCornell Lab of Ornithology
- Boreal Chickadee: IdentificationCornell Lab of Ornithology