Crop use by introduced bird species in winter in relation to crop structure and seed resources

From: Bird Study | Date: March 1, 2007| Author: | Copyright information

Capsule Most species preferred to forage in grassland where seed resources were more abundant and the vegetation was uniform in height but heterogeneous in density.

Aim To determine the influence of crop composition and structure, and seed food resources on the distribution of introduced bird species on New Zealand farmland in winter.

Methods Birds were counted on 90 ha of mixed cropping farmland during mid- and late-winter periods, 2004. The presence or absence of six introduced species (Blackbird Turdus merula, Skylark Alauda arvensis, House Sparrow Passer domesticus, Goldfinch Carduelis ...

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