Horses not getting along- help please.

[KEK]

12 months ago I got our 2 horses, a 3yo Connie gelding and 20yo Standy mare. They get on very well, he is the boss and occ will push her away from food but otherwise they stand together in the shade, eat together etc. The mare likes to have her head touching him. 1w ago I got a 14yo TB gelding. The other 2 do not like him, and won't let him go in the shade or to get a drink. The pony has been having the odd nip at him, and both drive him away. I am very concerned, especially because it's very hot over here currently.
What we've tried:
Multiple water containers all over the paddock
Tying pony and standy up for dinner
Feeding his hay miles from the others
Having him stand on the other side of the fence so he can stand under the tree and not be driven away (fine when we are home but not a great option for when we are both away for 10+hours.
Creating another paddock for him by himself- He just stood at the fence line to try and be with the others in the sun.

We have had them fenced off into a smaller section of the large paddock (maybe 2 acres) whilst my husband clears the rest of grass seeds and we will open the rest up which will give 2 trees for shade instead of 1 but they are miles apart and I don't think he will go by himself.

Any thoughts over anything I can do to help? TIA

 

[Meowy Catkin]

It took far longer than a week for my gelding to be accepted by my grey. I had three mares and he was a young gelding. I divided the paddock in two with electric fencing and popped him in with the friendliest mare. The other two were in the next door paddock and the grey was furious. After two weeks, she ignored him so I took down the tape. She of course remembered that she hated him and would pull the most awful faces at him but didn't boot him, so I left them to it. Then one day I noticed that grumpy bum had decided that she liked him after all! They've been fine for years now.

 

[KEK]

It took far longer than a week for my gelding to be accepted by my grey. I had three mares and he was a young gelding. I divided the paddock in two with electric fencing and popped him in with the friendliest mare. The other two were in the next door paddock and the grey was furious. After two weeks, she ignored him so I took down the tape. She of course remembered that she hated him and would pull the most awful faces at him but didn't boot him, so I left them to it. Then one day I noticed that grumpy bum had decided that she liked him after all! They've been fine for years now.

Thanks, that gives me hope! We've just opened up the rest of the paddock (5acres) so hopefully that will help. Will keep feeding separately. The pathetic side of me hates seeing him being treated like this as he's such a lovely horse, who is making me enjoy riding again! Fingers crossed.

 

[Meowy Catkin]

Yes do what you can to keep him safe (what you've listed sounds sensible eg more water containers) so they have the time to get used to each other.

 

[Orangehorse]

Two geldings and a mare. It will take longer for them to get to know each other. The first gelding doesn't sound too aggressive, so they might improve over time. Some geldings act like stallions around mares and will be nasty to other geldings, drive them away from the mare and act like stallions.

 

[oldie48]

Early days. I've often had three together and with the exception of one group, two geldings and a mare, they have all setlted down together but I never feed them together. Hay in the field always goes in several piles and any hard feed gets given outside the field. I never did sort the problem group but the one gelding was very aggressive towards the other to the extent that he pushed him out of the field through a thick hedge in the middle of the night, so I kept them separate except when ridden.

 

[KEK]

Two geldings and a mare. It will take longer for them to get to know each other. The first gelding doesn't sound too aggressive, so they might improve over time. Some geldings act like stallions around mares and will be nasty to other geldings, drive them away from the mare and act like stallions.

He has been driving him away (just in general) and I have seen him bite him (not much damage though). We think mare might be in season atm so possibly not helping.. thanks for reply.

 

[AdorableAlice]

Whilst the pecking order is being established it would be wise to remove hinds if any of them are shod.

 

[KEK]

Early days. I've often had three together and with the exception of one group, two geldings and a mare, they have all setlted down together but I never feed them together. Hay in the field always goes in several piles and any hard feed gets given outside the field. I never did sort the problem group but the one gelding was very aggressive towards the other to the extent that he pushed him out of the field through a thick hedge in the middle of the night, so I kept them separate except when ridden.

Thanks, interesting. We don't have stables so the hard feed gets given there but in their own feeders and we now tie pony and mare up till the TB is finished. We were discussing taking TB out the front of the paddock for his hard feed and his 3 lots of oaten hay (meadow hay in paddock).

 

[KEK]

Whilst the pecking order is being established it would be wise to remove hinds if any of them are shod.

Thanks. Pony and mare are not shod and TB just has fronts.