While out bird-watching, Brian observed a crow use a twig to pry ...

[tsand2]

While out bird-watching, Brian observed a crow use a twig to pry open a fast-food container that someone had left lying in the park. The crow's use of the twig is considered an example of _________.
 
  Fill in the blank(s) with correct word

Question 2

When solving problems associated with the likelihood of an event, humans tend to use _________ probability, while pigeons seem to use _________ probability.
 
  Fill in the blank(s) with correct word

[aadams68]

Answer to Question 1

tool use

Answer to Question 2

classical; empirical