Breeding ecology of Yellow Wagtails Motacilla flava in an arable landscape dominated by autumn-sown crops

• Published in: Bird study Vol. 59; no. 4; pp. 383 - 393
• Main Authors: Kirby, Will B, Anderson, Guy Q.A, Grice, Phil V, Soanes, Louise, Thompson, Catherine, Peach, Will J
• Format: Journal Article
• Language: English
• Published: Thetford BTO 01.11.2012; British Trust for Ornithology
• Subjects: agricultural land; beans; Birds; breeding; Breeding of animals; crops; foraging; grains; Habitats; landscapes; nesting; nests; Ornithology; rearing; spring; summer; vegetation
• ISSN: 1944-6705; 0006-3657; 1944-6705
• DOI: 10.1080/00063657.2012.715136

Capsule Yellow Wagtails successfully raised two consecutive broods in landscapes dominated by autumn-sown crops and did not require spring crops or fallow plots for later nesting.Aims To assess whether arable landscapes dominated by winter cropping provide habitats that allow Yellow Wagtails to raise two successful broods. To assess the utility of spring cultivated agri-environment fallow plots as a nesting and foraging habitat for Yellow Wagtails.Methods Nesting success and foraging behaviour of Yellow Wagtails was monitored on lowland arable farmland dominated by winter cropping during two successive breeding seasons.Results Yellow Wagtails successfully raised first and second broods mainly in winter cereals, with later nests being more successful. Some nests were initiated in bean fields where egg-stage failure rates were high, probably as a consequence of depredation. Fallow plots were not used for nesting but, along with other areas of sparse vegetation, were regularly used for foraging.Conclusions Yellow Wagtails breeding at relatively low densities achieved high rates of reproductive success in a landscape dominated by winter cereals and with few spring-sown crops. This study suggests that spring-sown crops may not be necessary for Yellow Wagtails to rear two successful broods each summer within arable landscapes.