Effects of a trawling moratorium on the breeding success of the yellow-legged gull Larus cachinnans
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Published source details
Oro D., Bosch M. & Ruiz X. (1995) Effects of a trawling moratorium on the breeding success of the yellow-legged gull Larus cachinnans. Ibis, 137, 547-549.
Published source details Oro D., Bosch M. & Ruiz X. (1995) Effects of a trawling moratorium on the breeding success of the yellow-legged gull Larus cachinnans. Ibis, 137, 547-549.
Summary
During the 1993 and 1994 breeding seasons, a transect was established through the colony, which was surveyed once a day to establish the date of first hatching, clutch size and egg volume of a sample of nests (around 55 each year). In both years, a group of 14 nests were surrounded with 50 cm high netting just before hatching, to facilitate the location of chicks and monitoring of breeding success. The composition of chick diets was assessed based on analysis of regurgitates (of largely undigested food) produced by chicks when handled for ringing.
Output references
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