Dave and Carl r34 confirmed.
Still a bit of empty space in your comics, would've added maybe a few birds in the distance to cover that a bit better. Nice job with the shadows.
Sometimes I'm so busy focusing on the characters that I never really think to fill the background (especially over multiple panels), but as you said, more birds isn't a bad idea.
Oh, and also thanks for the compliment on the shadows c:
Btw, I think someone already r34'd Dave:
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