Spring temperatures and laying dates of first eggs of three passerines in Croatia

Tree Sparrow (Passer montanus) Science Article 7

abstract

This study is based on the spring temperaturesand laying dates of first eggs of threepasserines (sedentary: Great Tit, Parus majorand Tree Sparrow, Passer montanus; migratory:Starling, Sturnus vulgaris). Laying datesof first eggs were used as estimates of timingof breeding. The term ‘laying date’ is definedas the date of laying of the first egg in a clutch.

Zdravko DOLENEC, Ardeola, 52(2), December 2005, 355-358

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