This blog post is provided by Yu-Wen Yang and tells the #StoryBehindThePaper for the article “Relative brain size explains migratory/resident tendency in birds: Partial altitudinal migration in Asian house martins“, which was recently published in Journal of Animal Ecology. This study explores why some martins choose to stay while others migrate by comparing their morphological traits and breeding performance. In the valleys of Lishan at Taiwan’s … Continue reading Only the Smarter Stay: How Brain Size Determines Migrating Decisions in a Montane Breeding Swallow