Chickens Acting Really Weird

[ilovebalkbalks]

My one year old Modern Game Bantam hen and my two pullet Silkie hens are acting strangely. This morning the MGB was staying near her coop, even though she usually is the first one to run out the door. She was walking around inside the coop and not really going out. I put her outside and closed the door and she ran around the outside until I let her back in. She has laid an egg, but afterwards she just sat on the nest even after I removed the egg and is still there. She is clucking a lot less than usual. The two Silkies don't lay yet, and they have been outside the coop. However, they have been huddled together near the coop and not gone anywhere. They don't seem to be eating or drinking much, their crops are full but I haven't seen them eat at all. This all started this morning. I have seen three predators in the last 24 hours, so could they be stressed from that? Please help me ASAP! I don't know much about chicken keeping.

 

[ilovebalkbalks]

UPDATE: MGB came off her nest, but now she has joined the Silkies in staying close to the coop.

 

[sourland]

Sounds as if they are aware that predators are in the area.

 

[ilovebalkbalks]

Thank you! Is there anything I can do to make them less nervous?