When I should be doing my 20th cent Topics reading,

I am sight singing. Bird songs. Actually I mean the sounds of birds transcribed and interpreted.
(The key is to at least identify A440 on your own.)

Might I bring your attention to my favorite // the only one in bass clef:

I really wish I knew who this came from. I found it on a music tumblr page I used to follow, and usually original posters are responsible with tagging who the content actually belongs to, but there is no luck with this one. I hope it's just that I'm not trying hard enough, but if I find out, or if anyone lets me know, I'll edit this post and link to where this page came from. :)

Happy Sunday!