Owl in 60: Early strigiforms

Tyto alba can lay 2–12 eggs when vole cycles peak. Nest-box programmes in UK barns track that boom-bust directly. Ketupa blakistoni is Endangered. Riparian old growth in Hokkaido and the Russian Far East is the binding constraint. Do owls turn their heads all the way around? About 270 degrees, not 360. Extra cervical vertebrae and vascular loops keep blood flowing during the twist.

Yes. Street lighting, park voles and road mortality now shape Strix aluco densities in European cities as much as woodland area. Owl is one of 24 types in this animals atlas. The pages treat it as a full system -- history, anatomy, operating principles, culture, icons, future pressure and market shape -- not a ranking of a best species.

Scores compare the owl with the other 23 types on speed, intelligence, range, resilience, cultural impact and ecological role. They are relative editorial marks. Resilience high means more secure; low means threatened. Many widespread owls are Least Concern; Blakiston’s fish owl and forest specialists sit far lower.