Haha... I guess the sizes of the birds don't go hand-in-hand with the surrounding climate. Might have something to do with available nutrition though.

Yes, lately I've seen a lot more birds than normally. I don't know if it's psychological or not, after seeing an article that said birds sing more loudly now that the Covid19 has made the world generally a quieter place with fewer humans making noise. According to the article they are "filling the void" with their singing.