Development and maintenance of nestling size hierarchies in the European starling (Sturnus vulgaris)

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Development and maintenance of nestling size hierarchies in the European starling (Sturnus vulgaris). / Ohlsson, Thomas; Smith, Henrik G.

I: The Wilson Bulletin, Vol. 106, 1994, s. 448-455.

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TY - JOUR

T1 - Development and maintenance of nestling size hierarchies in the European starling (Sturnus vulgaris)

AU - Ohlsson, Thomas

AU - Smith, Henrik G.

PY - 1994

Y1 - 1994

N2 - In this paper we show that nestling mass hierarchies in the European Starling (Sturnus vulgaris) are due to asynchronous hatching. The parents may, by starting to incubate the day the penultimate egg is laid, or earlier, affect the degree of hatching asynchrony and thereby the nestling weight hierarchy. Intra-clutch variation in egg size had no effect on nestling weight hierarchies, explaining only 0.4% of the variation in nestling mass at two days of age. Nestlings kept their relative size to siblings throughout a substantial part of the nestling period. Furthermore, the degree of variation in mass at two days of age affected the variation in mass at least until nine days. This relationship was stronger in larger broods.

AB - In this paper we show that nestling mass hierarchies in the European Starling (Sturnus vulgaris) are due to asynchronous hatching. The parents may, by starting to incubate the day the penultimate egg is laid, or earlier, affect the degree of hatching asynchrony and thereby the nestling weight hierarchy. Intra-clutch variation in egg size had no effect on nestling weight hierarchies, explaining only 0.4% of the variation in nestling mass at two days of age. Nestlings kept their relative size to siblings throughout a substantial part of the nestling period. Furthermore, the degree of variation in mass at two days of age affected the variation in mass at least until nine days. This relationship was stronger in larger broods.

M3 - Article

VL - 106

SP - 448

EP - 455

JO - Wilson Bulletin

T2 - Wilson Bulletin

JF - Wilson Bulletin

SN - 0043-5643

ER -