Cryptic crossword clue
Scientific type with a lot of fliers in his study 13

The most common and most likely answer to this crossword clue is the 13 letter word ORNITHOLIGIST

I've seen this crossword clue in The Sunday Telegraph
O
R
N
I
T
H
O
L
I
G
I
S
T

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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.

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