117 nests of Red-breasted Flycatchers in Białowieża primeval forest (NE Poland) were characterised. Most nests (79%) were built in Hornbeam Carpinus betulus and lime Tilia cordata. Three types of nest sites were distinguished: chimney shaped (26.4%), half cavities (46.4%) or shelves — the nest was wedged under a piece of bark against the main trunk (27.3%). Most cavity entrances were exposed to the south. Compared to other species of secondary cavity nesters in Białowieża National Park, Red-breasted Flycatchers used cavities of a different shape, with a smaller bottom area and at a relatively low height above the ground ( = 4.9 ± 3.13 m). Nesting trees had a smaller diameter (
= 31.2 ± 21.4 cm) and were more often dead (29.8%) than trees used by the other secondary cavity nesters. Only four nest sites were used in consecutive seasons.
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1 July 2001
Natural Nest Sites of the Red-Breasted Flycatcher Ficedula parva in a Primeval Forest
Cezary Mitrus,
Beata Soćko
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Acta Ornithologica
Vol. 39 • No. 1
July 2004
Vol. 39 • No. 1
July 2004
Białowieża National Park
cavity nesters
Ficedula parva
holes
nest sites
Red-breasted Flycatcher