This file is of a couple of chicks chirping and cheeping. They are actually gosling chicks (geese) on straw and grass, but could pass for birds rustling in a nest.
See also file Chicks Chirping Sound Effect SFX #2 which was recorded shortly after this. Birds, Geese
This is a recording of Geese. This sound effect was recorded in a custom built sound booth using state of the art valve mic pre amps, and high quality condensor microphones. Tweaked and optimized for use in film, television, radio and computer games. Birds, Geese