# What Is a Bird?

With teacher's guide

Traces the evolutionary relationship between birds and reptiles, and explains how the bird's skeletal structure gradually adapted to the requirements of flight. Uses close-up photography, animated drawings, and laboratory experiments to show that birds are able to live in a wide variety of environmental niches because of their behavioral instincts and the adaptations of structural features

Collaborator, Kenneth C Parkes

- Kind: Educational
- Year: 1962
- Runtime: 15 min
- By: Encyclopaedia Britannica Films, inc
- Genres: Education, Nature, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/whatisabird)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/whatisabird?play=1)