adult; no sexual dimorphism (California, USA; 2006-08-05)

Mountain Chickadee
Poecile gambeli

Native Range: North America

Notes: in the USA, the western counterpart of the eastern Black-capped Chickadee; found in open woodlands; issues a whistled call, chick-a-dzee-dzee-dzee; nests in tree cavities; joins mixed-species flocks in winter.

white line above black eye line and below cap (California, USA; 2006-08-05)

short, sharp, not-quite-conical bill (California, USA; 2006-08-05)

black throat, otherwise mostly gray body (California, USA; 2006-08-05)

sitting in the entrance of a nesting hole (California, USA; 2006-05-09)

white face, gray back (California, USA; 2006-08-05)

posing for a portrait (California, USA; 2006-08-05)