My bird box fell off the wall in the high winds a week ago during the night .. ( rusty old nail had bent ) . As soon as I discovered it I put it back . One little egg ( blue tits ) had sadly Broken but I think there are 4 remaining. However I have not seen the blue tit pair that were nesting there since . I have a cat .. but she usually brings me her kills so I’m optimistic that the pair have flown off and arnt injured. Are they likely to return to the box to check on their eggs or scared away for good . I have blues nesting every year .. sit sure if same pair yearly . would appreciate any input .