Some Mesoamerican birds

[fivemack]

A	B	C
D	E	F
G	H	I
J	K	L
M	N	O
P	Q, Q'
R
S	T	U

A is a grackle. F is something egret-ish. I is some kind of tubenose. K reminds me of B but is clearly not the same. L is a woodpecker, M is a vulture, O is a frigate-bird, P is something like a sandpiper, Q and Q' are a pelican and a cormorant, S is another pelican.

As for the others, I am quite unsure. E is quite an exquisite interpretation of the Little Brown Jobbie, if a bit large. Suggestions in comments?