Although interspecific competition is suggested to be one of the major forces dictating community structure, interspecific interference competition for nest sites in birds has been reported mainly from observational studies. Here, we asked whether interference by the larger House Sparrow (Passer domesticus) could reduce breeding success and parental behavior in the smaller Great Tit (Parus major) following clutch completion, by experimentally allowing House Sparrows to access half of the Great Tit nest boxes. Significantly more tit pairs failed to raise young in nest boxes that House Sparrows were able to enter during their breeding period compared to those that were not able to do so, because House Sparrows usurped 77.8% of the Great Tit nests. Great Tits also increased the duration of nest defense in the presence of House Sparrows. As the outcome of interference competition may lead to breeding failure, birds should necessarily evolve ways to avoid nest competitors either by selecting nests that restrict access to their larger competitors and/or by initiating breeding earlier. Conservation efforts should be directed toward attaching a metal restrictor plate around the entrance of nest boxes to prevent woodpeckers from enlarging the entrance and larger species from entering nests.
|Number of pages||7|
|Journal||Journal of Ornithology|
|State||Published - 1 Jul 2018|
Bibliographical noteFunding Information:
Acknowledgements Special thanks to Jonathan Chazan who took an active part throughout the entire study; to Shaul Aviel, Kobi Meyrom, and Shai Halevi for their advice and technical assistance; to Ori Peleg, Avi Koplovich, Mary Weber, Shir Asher, and Nati Wein for field assistance; to Israel Goldshtein and Sergio Chazan for help in building the nest boxes; and to Naomi Paz for editorial assistance. We thank Tel Aviv University, the Jewish National Fund, and the Smollar-Winnikov Scholarship Fund for funding this research.
© 2018, Dt. Ornithologen-Gesellschaft e.V.
- Community structure
- Interspecific interactions
- Nest box
- Nest failure
- Parental behavior
ASJC Scopus subject areas
- Animal Science and Zoology