In this blog post, Tim Forrester helps answer a weighty question: Does weight loss help or hurt nesting birds? Based on his recent paper with Tom Martin, “Observational and experimental evidence that rapid mass loss is consistent with the flight efficiency hypothesis and not caused by reproductive effort in three passerine bird species”, Tim shares the fascinating physiological adaptations undergone by songbirds in anticipation of … Continue reading Tim Forrester: Weight loss in female birds – an adaptive strategy