A bird-watcher sees a small yellow bird in a tree. Explain to the bird-watcher how he can use a dichotomous key to identify the bird. Assume he does not know anything about dichotomous keys. Then, write two steps of a dichotomous key that would be helpful for the bird-watcher.(2 points)

Answer 1

To use a dichotomous key to identify the bird, the bird-watcher would need to follow a series of questions or characteristics that lead to the identification of the bird species. Each step in the key presents a choice between two options, leading to a specific identification.

Two steps of a dichotomous key that would be helpful for the bird-watcher in identifying the small yellow bird in the tree could be:

Step 1:
1a. Does the bird have black markings on its wings?
1b. Does the bird have any other noticeable markings on its body?

Step 2:
2a. Does the bird have a white belly?
2b. Does the bird have a black beak or yellow beak?

Answer 2

shorter

Answer 3

Step 1:
1a. Is the bird completely yellow?
1b. Does the bird have any black or white markings?

Step 2:
2a. Does the bird have a black beak?
2b. Does the bird have a yellow beak?