Diet of Long-eared Owl and Common Kestrel in an urban landscape (Ukraine)
| Autor: | Ivan Zahorodnyi, Ihor Dykyy, Oleksii Dubovyk, Ivan Komarnytskyi |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine urban ecosystem Ecology biology long-eared owl Kestrel biology.organism_classification 01 natural sciences 03 medical and health sciences 030104 developmental biology Geography Long-eared owl small mammals parasitic diseases diet analysis Diet analysis Animal Science and Zoology Urban ecosystem common kestrel Urban landscape QH540-549.5 Ecology Evolution Behavior and Systematics 010606 plant biology & botany |
| Zdroj: | Ornis Hungarica, Vol 29, Iss 1, Pp 108-119 (2021) |
| ISSN: | 2061-9588 |
| Popis: | In the present study we performed a comparative dietary analysis of two predatory birds, the Long-eared Owl (Asio otus) and the Common Kestrel (Falco tinnunculus) in the district of Lviv city. We found that the Long-eared Owl and the Common Kestrel are typical small mammal specialists within the urban ecosystem. Considering the abundance and biomass of prey, small mammals comprise 98.4% of the Long-eared Owl’s diet. The species composition of mammals coincides almost 50% in the food intake comparison of the two birds. It has been established that the main prey of both species is the Common Vole (Microtus arvalis). The diet of the Common Kestrel is more varied, compared to the Long-eared Owl, due to the consumption of different species of insects (families Gryllotalpidae, Tettigoniidae, Carabidae and Scarabaeidae), reptiles and birds. This result suggested that dietary plasticity of the Common Kestrel facilitate successful adaptation to the urban landscape. The Long-eared Owl is more narrowly specialized in feeding on murine rodents, which reduces the trophic competition between the two predatory birds and allows the coexistence of two predators in the urban ecosystem. |
| Databáze: | OpenAIRE |
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