Wyniki wyszukiwania

1

Nest-site characteristcs of hole-nesting birds in a primeval boreal forest of Mongolia

100%

Bai M. L., Wichmann F., Muhlenberg M.

Acta Ornithologica

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2005

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tom 40

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nr 1

1-14

Nest sites of nine common hole-nesting bird species were studied in the West Khentey Mountains, NE Mongolia. Among three excavators, the Great Spotfed Woodpecker used more aspens, larger trees, and more living or intact dead trees than the Lesser Spotted Woodpecker or the Willow Tit. Among non-excavators, the Nuthatch used mainly old holes of the Great Spotted Woodpecker, and the Red-throated Flycatcher frequently used those of the Willow Tit. Thus, the nest site characters of these two species resembled those of the original excavators, and their nests were placed higher than those of other non-excavators. The Coal Tit and the Great Tit used mostly branch holes in living trees. With respect to nest site use, the Daurian Redstart behaved as a generalist while the Common Treecreeper specialized in long slits. The nest site selection of excavators might be governed by body size, territory size and their different abilities of excavation. The non-excavators were best differentiated by their preferred hole type, and their tree use and nest site characters were mainly a consequence of the location of such holes. Interspecific competition did not appear to be important in the nest site use of hole-nesting birds in the study area.

2

Density, distribution and nest-sites of woodpeckers Picidae, in a managed forest of Western Poland

88%

Kosinski Z., Kempa M.

Polish Journal of Ecology

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2007

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tom 55

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nr 3

Abundance, distribution and nest-site characteristics of woodpecker species (family Picidae), i.e., Great Spotted Woodpecker (Dendrocopos major L.), Middle Spotted Woodpecker (D. medius L.), Lesser Spotted Woodpecker (D. minor L.), Black Woodpecker (Dryocopus martius L.), Grey-faced Woodpecker (Picus canus Gmel.) and Wryneck (Jynx torquilla L.), coexisting in managed forest are described. All species preferred old deciduous forest stands (≥81 years old) as nest-sites, however, they differed in most aspects of nest site selection. Great- and Middle Spotted Woodpeckers excavated nest-holes most commonly in oaks (78 and 86% of nests, respectively), but Black- and Grey-faced Woodpeckers in beeches (71 and 100% of nests). However, placement of nest-holes within the same tree species differed among woodpecker species. Great Spotted- and Grey-faced Woodpeckers nested three meters lower (9 m) compared to Middle Spotted and Black Woodpeckers (12 m). Lesser Spotted- Woodpeckers excavated breeding holes relatively the highest in respect to tree height. With the exception of Lesser Spotted Woodpeckers, all specie used live trees as nest sites. Weaker excavators such as Middle Spotted- and Lesser Spotted Woodpeckers, nested more frequently in limbs and branches (31 and 25% of nests, respectively) compared to strong excavators, i.e., Great Spotted-, Black- and Greyfaced Woodpeckers (<8% of nests in limbs or branches). Weaker excavators more frequently selected dead tree fragments compared to strong excavators.

3

Rare Woodpecker species in Latvia

88%

Bergmanis M., Strazds M.

The Ring

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1993

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tom 15

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nr 1-2

Ograniczanie wyników

1 Acta Ornithologica

1 Polish Journal of Ecology

1 The Ring

1 Bai M. L.

1 Bergmanis M.

1 Kempa M.

1 Kosinski Z.

1 Muhlenberg M.

1 Strazds M.

1 Wichmann F.

1 2007

1 2005

1 1993

Nest-site characteristcs of hole-nesting birds in a primeval boreal forest of Mongolia

Density, distribution and nest-sites of woodpeckers Picidae, in a managed forest of Western Poland

Rare Woodpecker species in Latvia