I said that, because chickens have a terrible habit of choosing stupid places to set and roost. Little Bananas was caught roosting on the ground behind a pile of bales (stupid place). Sally was caught laying her egg in the grass. Even the seasoned Snowfluff set her eggs in the middle of her...
There are your two birds. You didn't say how big the birds had to be! (Sine and Cosine are under Dawn... so it's technically four birds. You also didn't say they had to be visible!)