Thanks.
Yes, the birds are supposed to be crows.
Dragadon, I'm actually using that film as a reference to my series! I'm doing a series of eight drawings on the topic of birds. I'm trying to convey a sense of impending insanity, as though one little thing would be enough to make one crack (imagine someone firing a gun near the tree, and the birds suddenly flying off).
By the way, my new personal photo is Tippi Hedren, the beautiful actor who played the main character in 'The Birds'.
I'm going to reply to the other topics this afternoon, right now I've got to get going.