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Breeding performance of the middle spotted woodpecker Dendrocopos medius in relation to weather and territory quality.


Pasinelli, G (2001). Breeding performance of the middle spotted woodpecker Dendrocopos medius in relation to weather and territory quality. Ardea, 89(2):353-361.

Abstract

Reproductive success in birds is influenced by a variety of factors, many of which can be attributed to human activities such as land use or forest management. Others like weather or age of the birds are not under human control but are influential as well. From 1992-96, I examined breeding phenology and performance of Middle Spotted Woodpeckers Dendrocopos medius in northeastern Switzerland in relation to weather, territory quality and age of the birds. Timing of breeding, length of the nestling period as well as nesting and breeding success significantly differed between years. On average, incubation started earlier in years with higher daily temperatures in March-April. Neither territory quality nor the participation of 1-year old individuals in pairs influenced breeding success, whereas low temperatures and high amounts of rainfall during the nestling phase negatively affected breeding performance, which probably reflects the difficulties encountered by the woodpeckers in provisioning their young with sufficient food during periods of bad weather. These findings suggest that weather events can strongly influence reproduction even of primary cavity-nesting species, exceeding presumed differences in habitat quality at a local scale.

Abstract

Reproductive success in birds is influenced by a variety of factors, many of which can be attributed to human activities such as land use or forest management. Others like weather or age of the birds are not under human control but are influential as well. From 1992-96, I examined breeding phenology and performance of Middle Spotted Woodpeckers Dendrocopos medius in northeastern Switzerland in relation to weather, territory quality and age of the birds. Timing of breeding, length of the nestling period as well as nesting and breeding success significantly differed between years. On average, incubation started earlier in years with higher daily temperatures in March-April. Neither territory quality nor the participation of 1-year old individuals in pairs influenced breeding success, whereas low temperatures and high amounts of rainfall during the nestling phase negatively affected breeding performance, which probably reflects the difficulties encountered by the woodpeckers in provisioning their young with sufficient food during periods of bad weather. These findings suggest that weather events can strongly influence reproduction even of primary cavity-nesting species, exceeding presumed differences in habitat quality at a local scale.

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Additional indexing

Item Type:Journal Article, refereed
Communities & Collections:07 Faculty of Science > Institute of Zoology (former)
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Language:English
Date:2001
Deposited On:11 Feb 2008 12:14
Last Modified:05 Apr 2016 12:13
Publisher:Nederlandse Ornithologische Unie
ISSN:0373-2266
Related URLs:http://loonen.fmns.rug.nl/ardea/ardea_show_abstract.php?lang=uk&nr=137

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