Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Seven parrots and some crows are perched on a tree branch. There was a noise and the same number of parrots and crows flew away. If only 2 parrots and 1 crow are left on the tree branch now, how many birds were perched on the branch to begin with?

### Response:
 Idadi ya kasuku waliokimbia baada ya kelele ni 7-2 = 5
Idadi sawa ya kunguru (5) waliokimbia, wakiacha kunguru 1, hivyo kulikuwa na kunguru 5+1 = <<5+1=6>>6 mwanzoni.
Jumla ya kunguru na kasuku ilikuwa 7+6 = <<7+6=13>>13.