Chapter 13: Ecology of Bird Populations

Edit Answers
1234567891011121314151617
Across
  1. 4. an eye disease that affects House Finches
  2. 7. an organism that transmits a pathogen from one host to another
  3. 8. preferred Collared Flycatcher males have these
  4. 10. an actuarial table showing the probability of death at each age and sometimes expected reproductive output at each age
  5. 11. a group of interbreeding birds of the same species
  6. 13. the statistical study of rates within a bird population, such as birth rates and death rates
  7. 15. a limiting factor for some bird populations
  8. 17. an avian pathogen that has recently spread to the New World, where organisms have little natural immunity
Down
  1. 1. the ratio of males to females in a population
  2. 2. a rodent that drives dramatic fluctuation in Arctic predator species
  3. 3. the number of eggs laid by a female bird in a single clutch
  4. 5. the estimated number of individual birds on Earth
  5. 6. a decline of physical, physiological, or reproductive performance with age
  6. 9. a habitat generalist that is found throughout North and Central America
  7. 12. living components of an environment
  8. 14. non-living components of an environment
  9. 16. individuals of a territorial species that don't hold a territory and wander among other territories or less optimal habitats