i had a nest box which was open fronted and i put in a bird camera and two my amazement i got great tit our so i think this great tits markings were quite hard to see this bird we hunk was a male was ever night for the next two nights coming at dusk and staying till dawn and sleeping so on Thursday we put a 28mm hole on the nest box beds we thought that was the nest box specifications beds we wanted him two find a female and nest and he has not returned that night i am stuck i am wondering if i should take the lid of can any help thanks Finn