A wildlife team is monitoring the number of birds in a park. There are 3 blackbirds in each of the park's 7 trees. There are also 13 magpies roaming around the park. How many birds are in the park in total? Let's think first. Chain of thought:
In the trees, there are 7 trees * 3 blackbirds per tree = 21 blackbirds. In addition to the magpies, there is a total of 21 blackbirds + 13 magpies = 34 birds in the park.
Therefore, the answer is 34.