Read the following conversation and answer the question.

W: Those birds love my yard. See? They are probably looking for worms.

M: Yeah, they are lucky they can find meals in lots of places. We have to go to the grocery store to buy our food.

W: True, but I wouldn't want to eat what they do, even if it's free.

Question: What are the speakers mainly talking about? 

- Birds.

- The woman's yard.

- Food from the grocery store.


Birds.