Cali was the only survivor and with 5 people at our home to care for her, she lived. The one thing that worried me the most was that she was kept warm enough day and night. More often than not, motherless kittens will die from being chilled. They need to stay warm and dry 24 hours a day. Heat lamps, hot water bottles under the blankets and body heat from humans is necessary if they are only days old.
Don't let your other pets visit the kittens. While these little cuties may look harmless, they could expose your own cats to a host of contagious diseases. Also, since the kittens aren't getting mom's antibodies from her milk, they are vulnerable to diseases that your pets may be carrying.
Always contact your local vet if you have found kittens that need to be fed by a bottle or syringe.