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Review Sheet for VT 3381:"Eyewitness: Bird"

1. 250 million years ago, _______________________________ were the only flying organisms.
2. The pterodactyls had wings made of _______________________, which were not easily repairable.
3. The first bird (or at least, one of the first birds) was _________________________________.
4. Reptilian features of this creature included its ________________ and its ___________________.
5. Bird song proclaims _________________________ and attracts _________________________ instead of"proclaiming happiness."
6. Bird bones are ________________________________________ compared to those of a land animal.
7. The most difficult stage of flight is __________________________________________________.
8. A example of a bird that tires rapidly in flight is the _____________________________________, in contrast to a ____________________________, which can hover in midair while sipping flowers.
9. "Eating like a bird" is a misnomer, as birds eat very large amounts of food each day. T F
10. Birds have a higher lower body temperature than mammals.
11. A bird heart rate can be up to _________________________________ beats per minute.
12. Many birds ride rising pockets of warm air or __________________________________.
13. Birds push against _________________________________ in order to brake for landing.
14. Unlike mechanical flying machines, birds have the capacity for ____________________________.
15. A bird ________________________ to"zip up" gaps in its feathers.
16. _____________________ from a preening gland helps to act as a waterproofing agent, which is particularly useful in aquatic birds.
17. While ducklings may float within a day, they take upwards of ____________________________ to form properly waterproof feathers.
18. Annual bird migrations can cover large distances. The arctic tern migrates from _______________________________________________________________.
19. Penguins may be awkward on land, but ______________________________ in water.
20. The heaviest bird alive today is the _________________________________________.
21. Furthermore, it is the fastest bipedal (two-legged) animal on land, achieving speeds of up to _______ miles per hour.
22. Given their"wise" appearance, owls are intellligent birds. T F
23. Bird beaks are differently shaped to ________________________________________________.
24. A woodpecker's beak is useful for _________________________________________________.
25. Overall, the _______________________________________ have the greatest variety of beaks, e.g., the flamingo's beak is for dredging.
26. Bird feathers can be very useful for: ______________________________________________.
27. Bird courtship is followed by: ___________________________________________________.
28. Ground nesting birds hatch in a more less developed state than tree-nesting birds.

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This web page last updated on February 15, 2000