Having spent a lot of my spare time digitising my slide archives over the winter the Cosmic Photo Challenge: Inside was rather well timed.
I now have digital copies of most of the nestbox interiors documenting the nesting cycle of various hole nesting species. So here’s the inside of three different nestboxes and three different species using them.
An adult Eurasian Blue Tit feeding young. The adult has an unidentified insect in its bill.
A male House Sparrow feeding young.
Juvenile Great Tits begging for food having just heard an adult land at the nestbox entrance hole. Occasionally the adults will take a break from the constant feeding to feed themselves and do some feather maintenance. As a result, all the young are hungry when feeding resumes.