Science
- 602
- Snow Crystals
- A complete guide to the science of snow crystals. Find out who did the first systematic study in 1954 and how such beautiful, symmetric shapes are formed.
- 604
- Australian Government - Bureau of Meteorology
- Instructions for students how to measure wind speed with minimal equipment and surprising accuracy.
- 605
- Forces and Winds: Online Meteorology Guide
- Describes in detail what causes wind, the different kinds of wind, and the friction the Earth causes.
- 609
- Budgerigar
- Wikipedia article explains how this bird is related to parakeets, where they live, what they look like, what they eat, and where their name comes from.
- 610
- Melopsittacus undulatus (Budgerigar)
- Learn what budgies look like, what they eat, where they nest, and how they act.
- 611
- Crested Caracara
- The Aviary tells how big this raptor is, what they eat, where they live and how they build their nests.
- 613
- Feather Site
- Photos, links, and information about domestic poultry with breed list, baby chick photos, articles on raising baby chicks, incubation and hatching, and wing banding, links to clubs, breeders, coop plans, and information.
- 614
- What is a Chicken?
- Article about the biology and classification of chickens, which descended from the wild Red Jungle Fowl (Gallus bankiva, also called Gallus gallus) of Southeast Asia.
- 615
- Let's Learn About Cranes!
- Tells about how they make sounds, run, and fight, and why they are one of the most endangered bird families in the world.
- 616
- Operation Migration
- Non-profit organization that uses ultra light aircraft to return migrating Whooping cranes to eastern North America. Contains facts and information on crane migration photographs.
- 617
- Eskimo Curlew (Numenius borealis)
- Tells what they look like, why they are endangered, where they live, and how they migrate.