Blue tits

[bill107]

I have a box on my house wall which is nesting Blue Tits. I have some builders due next week to renovate the external walls, could you tell me when they are due to leave their nest.Thanks in advance

[mrs.pudding]

http://www.bbc.co.uk/nature/wildfacts/factfiles/248.shtml  Sorry to land you with a website but this page gives you the time taken by a tit to incubate the eggs and raise the young. 

[bill107]

Thanks for the info. I shall delay the builders