Can someone advise when Jackdaws nest please? From a quick search online it seems to be April but we have a void area under our roof (the end cap has come off) which they have been in/investigating today. We want to close it off (ideally this week) but obviously can't do this if they are already settled and breeding.
We wondered if they were just investigating a possible site - will it be safe enough to put some ladders up to have a look? Thanks in advance.
Above reply looks like spam so I didn't click on the link and flagged it up so moderators can check it out.
Post edit: thanks to moderators for removing the spam
Local observations here in the West Midlands, we have magpies already nest building. I'm regularly watching magpies taking twigs and other suitable nesting material for renovating/building nests. And this behaviour is more or less standard here for the time of year.