Climate change related to egg-laying trends
Article Abstract:
Laying date in UK breeding birds is connected with temperature or rainfall in 31 of 36 species. Some 53% of species show long-term trends in laying date over time. This data offers evidence for the significant impact of rising temperatures on wildlife. It is anticipated that average laying dates will be even earlier for 75% of species by 2080. It is now necessary to investigate the impact of this trend on nesting success and the subsequent survival of young.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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UK birds are laying eggs earlier
Article Abstract:
Research based on 74,258 records from 65 bird species in the UK indicates that laying dates became earlier for 20 species in the period 1971 to 1995. The move towards earlier laying averaged 8.8 days. The 20 species included water birds, migrant insectivores, resident insectivores and corvids, and covered a wide range of nesting times. The trend towards nesting or reproducing earlier could be a more widespread phenomenon for wildlife in the UK.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Why parent birds play favourites
Article Abstract:
Research indicates that the younger, weaker nestlings in a bird's nest are more likely to survive if older offspring are deemed inadequate by the parent bird. Weaker nestlings, marginal chicks, are disadvantaged to older nestlings, core chicks, due to hatching asynchrony. Researchers believe that hatching asynchrony, and therefore competitive asymmetry, is designed to protect the brood against total failure.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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