Despite their colorful appearance, blue jays are actually in the genus corvidae, the same as crows and ravens. These birds are typically 9 to 12 inches long from beak to tail and weigh under 3.5 ...

These Small Birds Flutter Their Wings to Say ‘After You’ to Their Partner A new study of Japanese tits provides the first evidence of non-primate animals using gestures to convey messages.

A small-bird species called the Japanese tit (Parus minor) also may also use this more complex form of communication. ... “Similarly, when birds perch on branches, their wings become free, ...