The most common and most likely answer to this crossword clue is the 7 letter word HOODIES
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More clues leading to the result HOODIES
Buddy explains!

The straight part
We know that "crows" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crows = hoodies.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 HOODIES mean?
HOODIES noun- A sweatshirt, with an integral hood and, sometimes, a large kangaroo pocket at the front.
- (often with negative connotation of yobbishness) A young person wearing such a sweatshirt, usually a male.
- Foreskin
- Hooded crow, Corvus cornix
- The hooded crow.
- The hooded gull.