my six and half year old hen is mostly just sitting on her roost in the run and yawning. when she’s not sleeping, every few minutes or so she will yawn every few seconds for about a minute. she is eating and drinking. still very interested in treats. i looked at the poop under her roost and around the run but it all looked very normal. i also felt around for her crop and couldn’t really tell if i could feel it. she is acting a bit more lethargic than usual but she often has days where she’s a bit slower. any advice would be very much appreciated. thank you!