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1 December 2013 The Biparental Pattern of Incubation and its Relationship to Food Availability in the Yellow-Legged Gull Larus Michahellis
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Abstract

We examined the incubation pattern of yellow-legged gulls Lar us michahellis at a colony in the Balearic Archipelago. Incubating gulls were captured at the nest at different times of day. We found that, on average, males attend the nest less than females. Male or female attendance had a marked diurnal pattern: males seem to show a progressive increase in the probability of incubation until the central part of the day, which then declines during the evening hours (following a quadratic model). This pattern remained unaltered during the years that followed the closure of the local open-air landfill site, which represented the main food resource of this population. Our results suggest that the sex-related diurnal pattern of nest attendance during incubation is skewed towards females and is unrelated to food resources.

José Manuel Igual, Daniel Oro, and Giacomo Tavecchia "The Biparental Pattern of Incubation and its Relationship to Food Availability in the Yellow-Legged Gull Larus Michahellis," Ardeola 60(2), 365-370, (1 December 2013). https://doi.org/10.13157/arla.60.2.2013.365
Received: 5 April 2013; Accepted: 1 July 2013; Published: 1 December 2013
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