The male and female have been in and out of the oak tree nest box today. The male has been bringing tiny caterpillars in and, on a couple of occasions, the female has been in there too and he has fed them to her. Several times, though he seemed rather bemused when he turned up with food and she wasn’t there! He kept coming in and out with the caterpillar ‘looking’ for her. It was quite comical! I wonder what triggers him to start bringing in food, as she is not really incubating during the day. She covers the eggs completely and then just pops in and out occasionally.