birder

[bur-der]

noun

Origin of birder

1475–85 for earlier sense “bird-catcher”; 1820–30 for def 1; bird + -er¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

But a birder understands that the swift flight of a rare breed trumps all.
‘The Central Park Effect’ Explores the Magical Power of Birding
Rebecca Dana
July 13, 2012