What's the logic of that summer exemption? Is it assuming that cattle are in the fields from June onwards?

Makes no sense whatsoever, cattle, especially calves get nuts in the field on a daily basis on a lot of farms, crows are a nightmare destroying the troughs

Yes - Carrion Crow & Greycrow are classed as in the same group - same laws apply for each

If medium/large flocks moving and lots of chitter/chatter early morning and late evening, they are leaving and returning to their roost. The roost may or may not be on your lands, it could be on a neighbours lands, the roost could be several kilometres away, you may just be unfortunate in that that your house/buildings is/are under their established flight path.

Note - all fauna/flora (incl all bird species) are protected so you cannot just shoot them for the sake of shooting them, i.e. recreational shooting is not a valid reason.

See link to court case here – https://www.farmersjournal.ie/two-men-convicted-and-fined-for-recreational-killing-of-rooks-755984

In order to legally control them and other specified pest species you must have a just reason allowable by legislation. Many pest species can be controlled under the Annual Derogation Order as issued by the Minister for Housing, Local Government & Heritage – see link to current derogation order here for year ending 31 Dec 2023. Note - each pest species has a set period when they can be controlled and how they can be controlled.

https://www.npws.ie/sites/default/files/files/general-declaration-1-August-2022-31-december-2023.pdf

I would suggest you read through the documentation (General Derogation Order 2023), possibly contact your local Wildlife Ranger or the NPWS itself for guidance.

End of day you must be able to prove that damage/etc as per the regs is being caused.

It wil be back in no time at all. Its a very territorial bird your fellah and it is probably seeing its reflection in the glass and is attacking the invader of its space. You could try a hawk silhouette that you stick up on big plate glass windows to stop small birds from flying into the glass.It might get the message that there is a bigger predator around.

Birds are territorial, they see their reflection in the glass and as they cannot recognise themselves they think it’s another bird who shouldn’t be in their territory, they want to chase it off (maybe mate with it), hence picking at the glass.

We have two blue tits (boss indoors calls them “head bangers”) that do the same at the kitchen window & shed window most days when the sun/light is just right, its gas watching them, once the light changes, they’re gone until the next day.

If you trap it/release it miles away, problem solved but what if it has eggs/chicks in a nest close to your house, most birds have an inbred homing instinct and it will be back in gig time.  If it’s the same window, same place on window/at same time every day, put a small sheet of cardboard/paper to stop the reflection, how about a small pot plant on the outside sill.

Why not just leave the mirror there?

Whilst there is no more pecking on the windows - she's still crowing very loudly at 5am.

It's probably likely she'll be back if I do drop off her on the other side of the country.

As the "crow flies", pun, it's a hell of a lot shorter than your road drive.

It works for a short period of time, but seen as offensive in this day and age, especially not a good idea, if you have neighbours.