Hobbies staging at UK sites before autumn migration south must build fat reserves quickly, with welfare depending on abundant aerial prey.
Hobby welfare during pre-migration staging is acute - insufficient fat reserves before the Sahara crossing can result in death during migration. Sites with abundant dragonflies and aerial insect prey allow rapid fat deposition that enables successful migration. Protecting staging habitats including wetlands with high dragonfly populations and areas supporting hirundine roosts maintains welfare conditions for this spectacular aerial predator.