twitcher
I am a birder, so I really enjoyed seeing the hummingbirds and other exotic birds right outside my door.
These wetlands are a birder's paradise.
She got into wildlife when she used to be sent to stay with her grandfather, a keen birder.
A serious birder always has their binoculars hanging around their neck.

SMART Vocabulary: related words and phrases

Zoology: ornithology & bird-watching
aerie
birding
birdsong
birdwatcher
birdwatching
eggshell
feeding station
flighted
flightless
hide
hover
incubate
incubation
incubator
ornithological
ornithologist
ornithology
twitcher
twitching