Birds In Our Lives
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Birds In Our Lives
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25 Questions

1. Male birds lack an ____ organ; this is why few birds have a retained penis (~250)

2. ___ are ingested, but the rest is synthesized by the bird.

3. What is brood parasitism?

4. The glandular stomach or avian equivalent to the mammalian true stomach" is the ______________."

5. Many ___ flightless birds evolved on islands where natural predators were limited.

6. The individual follicles within the avian hierarchy of follicles in the ovary of a sexually mature bird are named according to

7. Birds walk on their...

8. ____ vision is ideal for depth perception.

9. The 9 categories of the IUCN Red List

10. What are some things that could cause endangerment?

11. What is the function of the air sac?

12. The ___ ___ serve as air storage units that allow birds to have oxygen-rich air present in their lungs during both inspiration and expiration.

13. ____ is the pair of bones that has been elongated and strengthened, acting like struts that prevent the collapse of the skeletal system during the powerful downstroke of flight.

14. The most common toe arrangement of toes seen in birds in which 3 toes point forward and one backward is called...

15. ____ relationships between birds are based off structural morphological similarities and molecular genetic data; they are constantly evolving.

16. Specks of color on eggs are for

17. The female chooses the male based on ____; generally visual and acoustic based

18. What are the functions of feathers?

19. There is a __ fossil record for ancient birds.

20. Fibrous plant material can be digested by bacteria in which of the following digestive organs in avian species?

21. The Syrinx includes

22. What are the advantages of flight?

23. The efficiency of extracting oxygen in the air sacs happen with the

24. The position of avian eyes also varies from

25. ___ is a feather pigment that causes reds, oranges, and yellows (must be ingested).

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