The most common and most likely answer to this crossword clue is the 10 letter word SANDERLING
I've seen this crossword clue in The Times
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More clues leading to the result SANDERLING
Buddy explains!

The straight part
We know that "shore bird" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shore bird = sanderling.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 SANDERLING mean?
SANDERLING noun- A small wading bird, Calidris alba, that breeds in the Arctic and winters on sandy shores and estuaries around the world. A type of stint.