Ha! That did make me laugh a bit.
My bird avatar is of a Gray Catbird, and I have numerous reasons for choosing it as my avatar. Catbirds happen to be my favorite type of bird, as I commonly see and hear them when I'm out and about on my hiking/photography adventures. Catbirds also tend to have A LOT of personality, of which I find to be quite humorous and enjoyable.
Their typical call is very distinctive from other bird calls (hence the feline that they are named after), yet they can also mimic many other bird calls (many of their mimic attempts are pretty darn accurate too!!). I have personally witnessed a catbird doing this multiple times, and in one instance, I even video-recorded a catbird mimicking another bird's call before seamlessly reverting back to its own "mewing" call, showing that it was indeed the same bird that was making both types of calls.
Another reason why I use a catbird as my avatar is because they remind me of Conservatism in a way. I am a fan of their "pro-individualism" mindset, ie, their unwillingness to raise other birds' eggs, such as what cowbirds attempt forcing other birds to do. Cowbirds really do, on the other hand, remind me of the Democrat Party. Cowbirds always force other birds to raise their own young, often to the point where those other birds are not able to adequately care for their OWN young.
Most birds enable this type of behavior from the cowbird, but personally, I get great enjoyment out of the catbird's response to the cowbird's scheming. Catbirds (in most instances, anyway) properly learn what their own eggs look like, and will completely and utterly reject any egg that does not look like the one that they learned, tossing out the "violating eggs" from their nests.
There are, sadly, some rare instances in which the devious cowbird "tricks" the catbird into memorizing the wrong egg, (ie, when a catbird ends up seeing the cowbird egg first, so it ends up memorizing the appearance of the foreign egg instead of the appearance of its own egg). In that rare instance, the catbird's defense mechanism ends up biting itself in the ass, resulting in the catbird tossing out its own eggs instead. But gladly, in most cases, the catbird gets it right!