Giant Flock of Bohemian Waxwings (Bombycilla garrulus)

Observation: This is the earliest I've ever seen a flock of Waxwings. It was also a really big flock, with about 100 birds or more. Flocks of waxwings are normally seen during mid to late fall right into the winter season.

Resource:

Guide to North American Birds – During summer in Alaska and western Canada, scattered Bohemian Waxwings may be seen perching on spruce tops and flying out to catch insects in mid-air. In winter these same birds become sociable nomads, with large flocks wandering the northwest in search of berries. Audubon - Bombycilla garrulus

The Cornell Lab of Ornithology – The name "Bohemian" refers to the nomadic movements of winter flocks. It comes from the inhabitants of Bohemia, meaning those that live an unconventional lifestyle or like that of gypsies. The Bohemian Waxwing does not hold breeding territories, probably because the fruits it eats are abundant, but available only for short periods. One consequence of this non-territorial lifestyle is that it has no true song. It does not need one to defend a territory. All About Birds - Bird Guide