Grebes
Herons, Waders
Ducks, Geese
Hawks, etc.
Grouse, Quail, etc.
Cranes, Rails
Shorebirds
Gulls, Terns
Pigeons, Doves
Owls
Hummingbirds,
Swifts
Nighthawk
Kingfisher
Woodpeckers
Flycatchers
Vireos / Shrike
Crows, Jays
Larks
Swallows
Chickadees, Bushtit,
Wrentit
Nuthatches
Wrens / Dipper
Kinglet
Robin, Thrushes
Starling
Warblers
Tanager
Sparrows, Towhee
Finches, Grosbeaks
Blackbirds, Meadowlark

Woodpeckers

Downy Woodpecker
DoWp_call01.wav, DoWp_hammer_01.wav, DoWp_hammer_02.wav

Hairy Woodpecker
HaWo_call01.wav

Northern Flicker
NoFl_call_01.wav, NoFl_call02.wav, NoFl_call03.wav, NoFl_call04-chew.wav, NoFl_call05_wicka.wav

Acorn Woodpecker
AcWo_call01.wav, AcWo_call02.wav

Pileated Woodpecker
PiWo_call01.wav, PiWo_call02.wav, PiWo_call03.wav, PiWo_duet01.wav , PiWo_hammer_01.wav

Red-breasted Sapsucker
R-bSa_call01.wav

Squirrels and chipmunks can sound like woodpecker vocalizations, see:
Tricky Mammal Sounds and other critters