Invertebrate-biased diet of burrowing owls in a newly-restored coastal grassland

Autor: Madeleine M. Ostwald, Kyra Sullivan, Lisa Stratton, Alison Rickard, Katja C. Seltmann
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Nature Conservation, Vol 56, Iss , Pp 151-159 (2024)
Druh dokumentu: article
ISSN: 1314-3301
DOI: 10.3897/natureconservation.56.127231
Popis: Recovering biodiversity across trophic levels is a major challenge in restoration ecology. Specifically, predator population recovery depends on the timely re-establishment of their preferred prey species in restored habitats. Here, we evaluate potential dietary factors contributing to the loss of western burrowing owls (Athene cunicularia hypugaea (Bonaparte, 1825)) from a newly-restored coastal grassland. We examined owl pellets and found that burrowing owl diets were relatively low in vertebrate prey during their brief occupation of the restoration site (2.6% of prey items; found in 61.8% of sampled pellets). We suggest that preferred food limitation may have been one contributor to the loss of owls from the restoration site. These findings suggest the need to prioritise re-establishment of prey communities for effective long-term recovery of burrowing owls in restored landscapes.
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