Welcome to Pigeon Angels!
I'm glad you were able to log in at last!
It sounds like your male pigeon is feeling frustrated! Hard pecking on the female's neck is related to mating behaviour gone wrong. Unfortunately, domestic violence can happen sometimes, and may lead to the couple having to be separated.
Occasionally pigeon couples break up. It's unusual, but it can happen. Either because one of the pigeons no longer fancies the other, or because the male is aggressive and the female becomes scared of him. In the wild, the discontented partner would just take off and leave the other, but in captivity it's a different matter, they have nowhere else to go!
You can take the male out of the communal cage and isolate him for a couple of hours to see if that stops the bad boy behaviour. Sometimes this works -- many prefer to behave rather than face solitary confinement. But sometimes it doesn't, and when that happens it's best to build a partition and divide the cage.
I have one pair living in adjoining cages for the same reason. The male is extremely aggressive, and he used to attack everybody and everything except his mate. Then one day he became aggressive with her too. Successive episodes of 'time out' seemed to work at first, but not for long. And the day he took a really hard peck at her leg that left her limping for 3 days, I decided that enough was enough. Now they only spend time together under strict supervision. The rest of the time they can see each other and 'talk' to each other, but no touching.
She dotes on him, and frets when she can't see him, but his attitude is different: he also tries to court other females he sees, so that shows his heart is not in the relationship.
I had posted about him here before, asking for advice from more experienced members, and you may find their advice useful. This is the link:https://pij-n-angels.forumotion.net/t1830-hercules-on-the-rampage
As for causes, it's mostly guess work. But it seems to happen most with males that still suffer pain from old injuries (the Dr. Houses of pigeon world) or had a very traumatic upbringing, or else males that feel frustrated at having no offspring.Could it be that your male is annoyed that the female is no longer laying?
It's a good possibility. Perhaps she doesn't love him any more (check how she behaves in relation to him), or perhaps she needs a calcium supplement
in order to lay. Calcivet and similar products contain calcium gluconate with added vitamin D3 and are perfect for pigeons.
Calcium gluconate is much more easily absorbed than calcium carbonate, the most common form of a calcium supplement. And vitamin D3 is what allows the absorption of calcium by the body. It has to be D3
, as birds cannot absorb vitamin D, which is usually prescribed for people. This vitamin is especially important for birds who don't have enough exposure to direct sunlight.
I would also check the male's amputation stump, and look for any sign of swelling on the joints that could be causing him pain. If you find anything amiss, it would be best to take him to the vet and ask for his advice.
Please let me know your findings, and good luck!