The most common and most likely answer to this crossword clue is the 10 letter word SATINETTES
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Buddy explains!
The straight part
We know that "Birds" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case birds = satinettes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SATINETTES mean?
SATINETTES noun- A faux satin usually made of synthetic fiber or cotton.
- One of a breed of fancy frilled pigeons allied to the owls and turbits, having a white body, tricolored shoulders, and bluish-black tail with a large white spot on each feather.