Clutch size, intraclutch egg size variation, and breeding strategy in the GoldcrestRegulus regulus

@article{Haftorn2005ClutchSI,
  title={Clutch size, intraclutch egg size variation, and breeding strategy in the GoldcrestRegulus regulus},
  author={S. Haftorn},
  journal={Journal f{\"u}r Ornithologie},
  year={2005},
  volume={127},
  pages={291-301}
}
  • S. Haftorn
  • Published 2005
  • Biology
  • Journal für Ornithologie
In Fennoscandia the Goldcrest regularly lays two clutches per breeding season. Near Trondheim in Central Norway (about 63° N) the mean size of 11 first clutches was 10.4 (9–12) eggs and of 10 second/repeat clutches 9.4 (8–11) eggs. Mean egg length was 13.49 mm, breadth 10.35 mm, mean weight of freshly-laid eggs 0.78 g, volume 737 mm3 and shape index 130.6. The correlation coefficient for egg length against weight was 0.47, and for egg breadth against weight 0.77. For the four clutches studied… Expand

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