The most common and most likely answer to this crossword clue is the 9 letter word SPOONBILL
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More clues leading to the result SPOONBILL
Buddy explains!

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 = spoonbill.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 SPOONBILL mean?
SPOONBILL noun- Any of various large, long-legged wading birds in the family Threskiornithidae, which also includes the ibises, that have a large, flat, spatulate bill.
- A species of fish, Polyodon spathula, native to the Mississippi/Ohio/Missouri river basin, or extinct close relatives.