Some bird

n.

A phrase used to describe an attractive member of the opposite sex.

In use

Look at yer man all dickied up tew de nines, he's some bird girl!

Let Lawrence Muck translate it to posh English for you
Lawrence Muck

Salutations! Would you like me to translate 'Some bird' in use for you?

Do look at that gentleman all dressed up to the nines, he is quite the dish, my dear!