Dark-eyed Junco
Junco hyemalis
Adult dark-eyed juncos generally have gray heads, necks, and breasts, gray or brown backs and wings, and a white belly, but show a confusing amount of variation in plumage details. The white outer tail feathers flash distinctively in flight and while hopping on the ground. The bill is usually pale pinkish. Males tend to have darker, more conspicuous markings than females. The dark-eyed junco is 13 to 17.5 cm (5.1 to 6.9 in) long and has a wingspan of 18 to 25 cm (7.1 to 9.8 in). Body mass can vary from 18 to 30 g (0.63 to 1.06 oz). Among standard measurements, the wing chord is 6.6 to 9.
ID text from Wikipedia, CC BY-SA 4.0
Volcano Junco
Junco vulcani
The volcano junco is about 16 cm (6.3 in) long and weighs about 28 g (0.99 oz). The sexes have the same plumage. Adults have a grayish olive crown and nape, sometimes with dusky streaks. They have black lores and a black or slate black "mask" around the eye. The rest of their head and neck are pale gray with an olive tinge on the ear coverts. Their upperparts are buffy brown with black streaks. Their wings are dusky with thin to somewhat wider buffy brown feather edges. Their tail is dusky with thin gray feather edges and pale gray tips on the outermost pair. Voice: The volcano junco makes "a variety of high, weak utterances". These are described in more detail as ""short, choppy phrases of squeaky, burbling, or buzzy notes: k'cheew, chu k'wee, chip-chip ts'chew tsi'weet, etc.".
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Dark-eyed Junco and Volcano Junco.