Thats awful - its devastating when this happens. Young foxes will be going out on their own now, and they are around during the daytime. Brave little things, and will come in the field even if you are there. Before we had the llama, a young fox came and helped itself to one of our large laying hens. Fully feathered, it was too heavy for the little fox, and after much yelling and chasing, it dropped the hen - no damage just traumatsed. Although it did come back and take another, and this time got away with it. That was horrible, as the hen was still alive.
The other evening about 6pm I saw a fox cross the bypass in the village - obviously heading out to look for food. My hens are out until 9pm and refuse to go in any earlier.