Linda - It’s looking lovely, as always! The details really make this piece come alive, although that particular turn of phrase is probably only appropriate for the right side of the image! 
I like the dead bird, but you could take it further. (I know, you’re just so excited about doing that!
But if it’s on the ground, one might expect it to be in a much further state of decrepitude than the things dying in the air. Right now, it comes off as a bird lying on the ground, could even still be alive. It’s even got all its feathers, unlike the birds still in the air. But maybe if its more decayed…? There’s a great picture in one of the more recent Spectrums by Wes Benscoter, a cover to a magazine called “Your Flesh Monthly,” with a cat holding a very deceased, very maggoty (sorry!) bird… I’d post a link but I can’t find the iamge anywhere online, even on his web page. But you must have some Spectrum collection books, maybe you know the one I mean…? Anyhow, might drive home the point a little more… And I’m sorry for saying anything about it, simply because you were quite clear about how much you just love painting dead animals.
The mouse is really wonderful and cute, though… Good karmic balance! 
Could I ask what is going on with the bloody hand? I mean, I get that it’s bloody, but with the dark smear above Nature’s knee, it almost looks like the left woman used her nails and took a major chunk of flesh out of Nature’s leg! I just wasn’t sure. If that’s not the case, maybe a little thinner coat of blood, with some more skin showing through and more of an emphasis on the drips could help it read better.
Anyhow, it’s looking quite lovely. I’m sure you’ll find something else to tweak with in the next month or so…
Good luck!
-mike