Hornugglor Asio otus häckande i en koloni med kaspiska trutar Larus cachinnans: Omvända skyddsroller för samhäckare?
DOI:
https://doi.org/10.34080/os.v30.22033Nyckelord:
samhäckning, häckningsekologi, trutförsvar, bohabitat, predatorfritt områdeAbstract
We describe the event of Long-eared Owls Asio otus nesting on an island within a colony of Caspian Gulls Larus cachinnans at the Mietków Reservoir (SW Poland). The owls nested in an old (possible corvid) nest in a willow and raised two owlets. They probably did not hunt gulls, neither adults nor chicks. We suggest that, in this case, the Long-eared Owls benefitted from breeding within a gull colony because of the added security against predators that the gulls provided.
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