2007
Broken Littorina littorea shells: predation by birds?
Publication
Publication
Basteria , Volume 71 - Issue 4/6 p. 101- 104
Littorina littorea shells found broken on a cycle-track next to where they lived, are thought to be broken by shell-dropping birds. Shells broken experimentally by dropping them from 6 m height on a concrete floor showed very similar damage: a hole in the last whorl, whereas the aperture rim remained intact. Examples from the literature indicate this shell damage to be characteristic for shell-dropping by birds. We suspect carrion crows as the culprit, but field observations have to prove this.
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Basteria | |
CC BY-NC 4.0 NL ("Naamsvermelding-NietCommercieel") | |
Organisation | Nederlandse Malacologische Vereniging |
G.C. Cadée, & H.W. Nijhuis. (2007). Broken Littorina littorea shells: predation by birds?. Basteria, 71(4/6), 101–104. |