The most common and most likely answer to this crossword clue is the 7 letter word SPARROW
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More clues leading to the result SPARROW
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The straight part
We know that "bird" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bird = sparrow.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 SPARROW mean?
SPARROW noun- The house sparrow, Passer domesticus; a small bird with a short bill, and brown, white and gray feathers.
- A member of the family Passeridae, comprising small Old World songbirds.
- A member of the family Emberizidae, comprising small New World songbirds.
- Generically, any small, nondescript bird.
- A quick-witted, lively person. Often used in the phrase cockney sparrow.