Mixed clutches of Blue Tits Parus caeruleus and Great Tits Parus major in nest boxes in Central Italy

Authors

  • Fabrizio Petrassi S.R.0.P.U., c/o Oasi naturale WWF "Bosco di Palo", Via Palo Laziale 2, 00055 Ladispoli RM, Italy
  • Alberto Sorace
  • Federica Tanda
  • Carlo Consiglio

DOI:

https://doi.org/10.34080/os.v8.22303

Keywords:

interspecific parasitism, egg discrimination

Abstract

In hole nesting birds and especially in tits Parus mixed clutches, laid by two or more species in the same nest, are often observed (Merilä 1994). In this paper we report four mixed clutches of Parus caeruleus and P. major in nest boxes in the Presidential Estate of Castelporziano (41°44’N, 12°24'E), where populations of these two species, studied since 1991 (Bellavita & Sorace 1994, Sorace et al. 1994, Petrassi et al. 1997), reach very high density, superior to those in other areas of Central Italy (Bellavita & Sorace 1994).

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Published

1998-04-01

How to Cite

Petrassi, F., Sorace, A., Tanda, F., & Consiglio, C. (1998). Mixed clutches of Blue Tits Parus caeruleus and Great Tits Parus major in nest boxes in Central Italy. Ornis Svecica, 8(1–2), 49–52. https://doi.org/10.34080/os.v8.22303

Issue

Section

Short Communications