Energetics of Incubation by the Goldcrest Regulus regulus in Relation to Ambient Air Temperatures and the Geographical Distribution of the Species

Energetics of Incubation by the Goldcrest Regulus regulus in Relation to Ambient Air Temperatures and the Geographical Distribution of the Species

The total heat requirement to hatch an egg successfully was calculated to be 27.4 kcal, and the daily amount of heat applied to the eggs, at an air temperature of 16°C, was 2.8 kcal. Mean daily air temperatures lower than 10°C are increasingly unfavourable to the Goldcrest's breeding success. T...

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Veröffentlicht in:Ornis Scandinavica 1978-01, Vol.9 (1), p.22-30
1. Verfasser: Haftorn, Svein
Format: Artikel
Sprache:eng
Schlagworte:
Animal nesting
Bird nesting
Eggs
Feathers
Female animals
Hatching
Incubation
Low temperature
Rain
Temperature distribution
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Zusammenfassung:The total heat requirement to hatch an egg successfully was calculated to be 27.4 kcal, and the daily amount of heat applied to the eggs, at an air temperature of 16°C, was 2.8 kcal. Mean daily air temperatures lower than 10°C are increasingly unfavourable to the Goldcrest's breeding success. The northern distribution of the Goldcrest in Fennoscandia appears to be limited by the air temperature during the breeding season.
ISSN:0030-5693
DOI:10.2307/3676135