New nesters and trellises

Hi everyone!

im new here and have a probably very newbie question, if you can please spare the time to help me out Slight smile

I have a new nesting pair of blue tits in my garden bird box, which is wonderful. However I have recently planted a climbing plant beneath the box (before they moved in) and need to fix a trellis to the wall.

Would it be ok to drill beneath the box about 4 times over 10 minutes, or would that cause the pair to move away/upset their nesting?

thank you in advance for any and all advice!

Andy