different between birdy vs birdly

English

bird +? -y

birdy (comparative more birdy, superlative most birdy)

Resembling or characteristic of a bird.
- 1940, Thomas Wolfe, You Can't Go Home Again
  He was a brisk and birdy little man with a chirping, cheerful voice; and, although he was almost ninety, he always seemed to be in good health and was still immensely active.
(of a gun dog) Excited due to having encountered a bird or its scent.
I think your dog is getting birdy.

birdy (plural birdies)

From bird +? -ly.

birdly (comparative birdlier or more birdly, superlative birdliest or most birdly)

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