My neighbor's chicken has been raising my five ducklings outside for the past four weeks. Just before they turned four weeks old she started pecking them to get them to leave her alone but she was still protective of them. At night it seems she still sleeps with them, but I'm not sure if that's because she doesn't like the roost I made for her. I was going to go catch her today to take her back to my neighbor, but she was sitting on them! Ten minutes later she was back to pecking and driving them away. I'm so confused. Temperatures are in the 40s at night this week and I don't want them to be too cold, but I don't want her to hurt them! Will five four week old ducklings be able to keep themselves warm at night?