Biddy vs Birdy - What's the difference?

As a proper noun biddy

is a diminutive of the female given name bridget.

(of a gun dog) excited due to having encountered a bird or its scent.

(rare).

Derived from (m), diminutive form of (m). It came to be generic name for an Irish maid (US), and then an old woman.

(biddies)

(pejorative) A woman, especially an old woman; especially one regarded as fussy or mean or a gossipy busybody.

(uncommon) An attractive little girl.

(senseid)(archaic, colloquial) An Irish maidservant.

(by extension, derogatory) Any Irishwoman

A name used in calling a hen or chicken, often as "biddy-biddy-biddy".

(Shakespeare)

* 1915 Burgess, Thornton W. , The Adventures of Chatterer the Red Squirrel , Little, Brown, and Company, Boston, Ch. XI:

"Well, we'll see about it by and by," said Farmer Brown's boy. "There's the breakfast bell, and I haven't fed the biddies yet."

(biddies)

(label)

(en adjective)

(of a gun dog) Excited due to having encountered a bird or its scent.

I think your dog is getting birdy .

(birdies)

(rare)