| Publication Type: | Journal Article |
| Year of Publication: | 1975 |
| Authors: | O'Connor, RJ |
| Journal: | Journal of Zoology |
| Volume: | 175 |
| Issue: | 3 |
| Date Published: | 1975 |
| ISBN Number: | 1469-7998 |
| Keywords: | Cyanistes, Cyanistes caeruleus, Paridae, Parus, Parus caeruleus, Passer, Passer domesticus, Passeridae |
| Abstract: | Metabolic rate and body temperature in nestling Blue tits and House sparrows were measured in broods of different size and age. Surface-volume ratio effects were found in both poikilothermic and homoiothermic Blue tits at ambients of 15°C but not at 20°C. The possibility of incipient hyperthermia amongst young nestlings maintaining sub-adult body temperatures is discussed. For the House sparrows heat retention by the nest was of greater importance than the surface-volume effect. Differences in nest structure between the two species are described and related to the thermal requirements of nestlings in large as against small broods. |
| URL: | http://dx.doi.org/10.1111/j.1469-7998.1975.tb01407.x |
| Short Title: | Journal of Zoology |
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