Ch. 7 Review
Across
- 5. type of flight in which a bird alternates flapping, gliding, or coasting
- 6. portion of an egg that is the large egg cell produced by the mother's ovary
- 8. the regular movement of animals between two habitats
- 12. process of keeping eggs warm for proper chick development
- 14. the major muscles birds use for flight
- 16. type of bath birds take to rid themselves of parasites
- 17. the term that describes how birds groom
- 18. food storage sac in a bird's esophagus
- 20. the bone that the bird's flight muscles attach to
- 22. type of flight in which a bird flaps its wings continually to travel forward
- 23. organ located at the base of the trachea that produces sound
- 24. pointed claws
- 25. practice of rubbing ants on plumage
- 26. when birds gather in large groups
Down
- 1. type of flight in which a bird remains stationary in the air briefly
- 2. process of shedding and replacing old feathers
- 3. section in a bird's stomach that grinds food
- 4. the world's smallest bird
- 7. type of vision in which both eyes can focus on one subject
- 9. type of flight in which a bird stretches out its wings to coast "downhill"
- 10. migration routes of birds
- 11. the fasting-running flying bird
- 12. built-in knowledge that animals possess at birth and do not have to learn
- 13. feathers that provide insulation
- 15. feathers that provide the bird's streamlined shape
- 19. type of flight in which a bird uses thermals to gain altitude
- 21. the most strenuous part of a bird's flight