One from the archives taken in Cheshire in the late 1980s.
Having documented the complete nesting cycle of a pair of Eurasian Blue Tits in 1987 I went on to photograph other species in different nestboxes over the next couple of years.
Here an adult Great Tit (Parus major) is about to feed some recently hatched young with a small yellow green caterpillar. While it looks as if the bird is looking at the camera it was just the timing of the shot. It was dark inside the nestbox, I was releasing the shutter a second or two after hearing an adult land at the entrance hole.