Why are birds called warblers?
Although these birds are closely related to the New World tanagers, they take their name from their superficial resemblance in form, structure, and habits to the distantly related Old World warblers.
Do warblers flock together?
These flocks are unique in including a mix of resident and migrant birds that hang out together for much of the winter. Uncommon birds like the Townsend's warbler join these groups because they aren't numerous enough to form their own species-specific flocks.
Do flycatchers flock?
Among the tyrant flycatchers there are also some species joining mixed flocks on a somewhat regular basis, including the sepia-capped flycatcher, eared pygmy tyrant, white-throated spadebill, and Oustalet's tyrannulet. However, even of commonly participating families not all species join mixed flocks.
wren-warbler, any of a number of Old World warblers, family Sylviidae (order Passeriformes), that are wrenlike in carrying their tails cocked up. The name also denotes certain birds of the family Maluridae that are found in Australia and New Zealand.
A murmuration of starlings is an amazing sight - a swooping mass of thousands of birds whirling in the sky above.