Summary
The number of attacks of Common Terns towards a man intruding into a tern colony during chick stage increased from morning to evening.
Literatur
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Becker, P.H., Finck, P. Tageszeitliche Steigerung der Feindabwehr der Flußseeschwalbe(Sterna hirundo) . J Ornithol 125, 336–339 (1984). https://doi.org/10.1007/BF01640483
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DOI: https://doi.org/10.1007/BF01640483