Last Lecture

Question 1

What was an existential threat to bald eagles and the peregrine falcon at one time?

Answer 1

DDT

Question 2

What is hacking?

Answer 2

Taking individuals from a species out of the wild and raise them in controlled captivity to ensure survival to adulthood, then nesting them back in the wild.

Question 3

What was the main threat to the Californian Condor?

Answer 3

• loss of habitat, loss of natural prey (bison)

- currently cannot survive on their own despite a rising increases in population

Question 4

What is captive breeding?

Answer 4

• raising young in captivity and protecting them.

- requires more investment than hacking

Question 5

What is conservation by design

Answer 5

• making ecological reserves for birds
• small areas are not as good as large areas
• all about MAINTAINING LARGE POPULATIONS since they are more resilient/robust

Question 6

what is the correlation between “years since isolation” and “probability of extinction”?

Answer 6

• the more years since isolation, the greater the probability of extinction
• the smaller the starting size of a population, the greater the probability of extinction