Wyniki wyszukiwania

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Nest-sites used by Stock Doves Columba oenas: what determines their occupancy?

100%

Kosinski Z., Bilinska E., Derezinski J., Kempa M.

Acta Ornithologica

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2011

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tom 46

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nr 2

Nest-site preferences of the Stock Dove Columba oenas population breeding in holes excavated by the Black Woodpecker Dryocopus martius in three sites in western Poland was examined. During the surveys, 176 different trees with 326 holes of Black Woodpeckers were found and investigated. Habitat data at nest locations were characterized on a fine microhabitat scale — hole tree. We used individual selection indices and canonical varíate analysis to describe nest-site preferences. Both analyses provided similar results. Nest-site selection of the Stock Dove was consistently associated with live beeches Fagus sylvatica with more than one hole. These features were clearly associated with diameter at breast height. Moreover, holes situated higher in tree trunk were preferred. Dead trees, mostly Scots Pines Pinus sylvstris, were avoided by the Stock Dove. We suggest that positive selection for smooth-barked beech trees with a number of holes, as well as holes situated higher might reduce the risk of predation by arboreal predators, e.g. the Pine Marten Martes martes. The positive selection for live trees, and clear avoidance of the dead ones, may reduce the cost of incubation and thermoregulation. Moreover, the live beech trees have long life expectancy compared to other tree species. Our results provide evidence that large alive beech trees with the number of holes excavated by Black Woodpeckers are necessary for maintaining breeding population of the Stock Dove.

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

59%

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

59%

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

2 Kempa M.

2 Kosinski Z.

1 Bergmanis M.

1 Bilinska E.

1 Derezinski J.

1 Strazds M.

1 2011

1 2007

1 1993

Nest-sites used by Stock Doves Columba oenas: what determines their occupancy?

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

Rare Woodpecker species in Latvia