Differences in a Cage Escape Behaviour between Two Migrating Warblers of Different Stop-Over Strategy.

Cognitive abilities play an important role for migratory birds that are briefly visiting a variety of unfamiliar stop-over habitats. Here, we compared cognitive abilities-linked behaviour (escape from an experimental cage) between two long-distant migrants differing in stop-over ecology, Sedge Warbler (; not territorial, searching for locally superabundant food) and Reed Warbler (; territorial, foraging on a common prey) during the autumn migration. After two minutes of acclimatization in the cage, we remotely opened the cage door and recorded the bird's reaction.