I doubt if the birds are nesting on your roof they might be nesting in a gutter or whatever.
Blackbird nest in roof.
If you click the link that says protection of birds you will see that it is illegal to do anything to or with a bird s nest until all of the eggs and birds are gone.
How to stop birds nesting in roofs.
If it s just going to be a couple of day we may leave them be if not we may to take punative.
But special rules do apply if a nest is discovered during renovation or repair work.
How do we get rid of them and does anyone know how long it takes from birth to departure.
Try to arrange for them holes to be sealed during the morning as this is when most birds are out of the nest and they aren t likely to be sealed in the roof space.
Many of the birds that use roof spaces are now species of conservation concern.
I could be wrong but as it has nested in the roof i think it is perhaps unlikely to be a blackbird but more likely a starling if it is blackbird sized and dark coloured.
You will see the wildlife and countryside act of 1981.
In this case what you can do is deny access to the birds and install an artificial nesting box close to the.
Blackbirds do sometimes nest close to buildings but prefer thick hedgerows i think.
There are very few birds that will nest in the roof space or under your eaves.
If you re worried that some birds might be trapped accidentally you can install a temporary mesh cover for a few days and monitor the hole.
When we work with homeowners with birds nesting in their roof first of all we must consider that it is illegal to disturb or destroy an active nest.
More information about preventing birds from nesting in your chimney.