THE DIET OF MEDITERRANEAN GULL (LARUS-MELANOCEPHALUS) CHICKS AT FLEDGING

Authors
Citation
V. Goutner, THE DIET OF MEDITERRANEAN GULL (LARUS-MELANOCEPHALUS) CHICKS AT FLEDGING, Journal fur Ornithologie, 135(2), 1994, pp. 193-201
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Ornithology
Journal title
ISSN journal
0021-8375
Volume
135
Issue
2
Year of publication
1994
Pages
193 - 201
Database
ISI
SICI code
0021-8375(1994)135:2<193:TDOMG(>2.0.ZU;2-I
Abstract
The diet of Mediterranean Gull chicks was investigated in a Macedonian wetland using three different sampling methods: stomachs from freshly dead chicks (1988), regurgitations (1987) and carcass stomachs (1986- 88). In fresh stomachs, gastropods were the most important animal prey by mass and insects by numbers. In terms of overall volume and biomas s, wheat grains were the most important food. In regurgitations and ca rcass stomachs insects were the most important prey. Comparison of the results from the different methods revealed considerable differences which are attributed to feeding behaviour of the gulls and prey dynami cs rather than the methodology used. The importance of prey types is d iscussed; composition of diet probably differs considerably between ge ographical areas