tony sayer wrote:
In article , Doki
scribeth thus

"larkim" wrote in message
...
We've had some swifts nesting firstly in the eaves and now slightly
further into the loft (I presume they've used some of the membrane
as nesting material and made the hole larger), plus some sparrows I
think at another point.

What time of year is a good time to repair / block these holes so as
not to interfere with nesting? And how thorough should I be about
cleaning up behind them?

You should avoid disturbing breeding birds, and generally this means
between June and the end of August. Not doing so, without a proper
survey, is against the law. Even for pigeons!

Pigeons!! about time that law was amended

I've been on more than one building site that's totally cleared. Apart from
one tree. With one pigeon sat on a nest. Bonkers.