Do Canaries need any sort of special care when breeding?
The birds should be getting a high protein food every day, all year round. Once the first egg hatches, make sure that you increase the amount offered. For the first couple of weeks, this is all that the hen will feed her young. A lot of food is required to fuel the nestling’s explosive growth. Some hens take extremely good care of their young. Others refuse to even sit on the eggs. I’ve had birds that lovingly cared for their young for a week or two. At that point the mother would mutilate the baby birds. If, after a couple of tries, a hen does not make a good mother, either just keep her as a pet, or give her away to a good home.