Two Siberian flying squirrels (Pteromys volans) were in a bird house which was built for bird reproduction research.
Later, we observed them go out from the nest.
Their eyes were retouched to remove of the red of the eyes.
After three days we took this photo, we went to this place again.
There was no chicks in the nest, they had already fledging.
But we saw the parents and heard the voice of chicks (I thought), so the fledglings were stayed nearby yet.