Part of the mod I run when playing. It adds a bunch of mundane birds, who mostly just provide the hunters with things to shoot.

Big birds:

red-tailed hawk
goshawk
bald eagle
golden eagle
gyrfalcon
saker falcon
condor
prairie chicken
capercaillie
sage grouse
gull
toucan

Vermin birds:

blue-chested hummingbird
red-tailed comet
ruby-topaz hummingbird

Note 1: in my personal mod, the generic eagle becomes the imperial eagle found in Eastern Europe. The giant eagle is still based on the original (imperial) eagle.
Note 2: to use the sage grouse, you'd need to mod in some sagebrush plants as well, as they're panda-like in their diet.