Facteurs régissant le taux de survie des jeunes chez la perdrix grise (Perdix perdix)

Author Potts, G.R.
Citation Potts, G.R. (1971). Facteurs régissant le taux de survie des jeunes chez la perdrix grise (Perdix perdix). Bulletin Spécial du Conseil Supérieur de la Chasse, 15: 23-34

Abstract

Since 1952 the chick survival rate has been 33% lower than in the period of 100 years ending in that year.

This is primarily due to a decline in the biomass of insects in cereal crops. In some years this has resulted in widespread starvation among the chicks.