A three letter bird is an owl.
Auk
moa (it is extinct)
emu moa (huge, extinct, flightless bird from New Zealand) jay owl hen
artimisia
scooter
Magnolia
Canary is a bird. Cassowary is a bird.
very difficult
Ibis ^^
wren
I don't believe there is a bird with such a name...
Kiwi is a bird. It ends with the letter i.