My 5 GLW's are 18 months and live in CT. I spend a lot of time with them so noticing different behavior is like a red flag. We free range about 2-4 hours a day, supervised Always of course. 4 of the 5 are experiencing their first molt (i think), except for 1. What i have noticed during molting:
* standoffish
* more quite (a chatty hen became less chatty and 1 hens voice seemed 'off' as well)
* 2 of my hens developed swelling on one side of the face that diminished fairly quickly.
* less enthusiastic about 'feeding time' when i offer wet mash morning and night.
* more cautious, sticking closer to the run/henhouse currently
* not laying eggs
Through the molt, and observing behaviors, i have learned what is concerning. A lazy seeming chicken may be concerning, but overall, she is still with the flock and manages to poke around and still eat and roost. I will check her poop as well. If i get concerned, i will offer a favorite treat to said hen, and if she enthusiastically takes it, i am less concerned. I look for overall normal behavior; is she with the flock/eating/roosting/scratching. Do her eyes and skin look normal.... If all this points to yes, then I can assume its normal(?) molting reactions. The face swelling I have never heard of with molting, but, it is coincidental the timing. Both hens developed the face swelling at the start of the molt (about 2 weeks apart), and had no complications otherwise, so I dunno, but like I said, i look for normal chicken behavior. My favorite test is when i speak to said hen. I am looking for a response that is common from her. Does she look at me and say something in her usual manner? If i say her name and offer her a favorite treat, does she take it well enough? If yes, i can assume she is fine. A chicken with her head down and not giving eye contact or response would have me in a tizzy! The power of observation is, well, powerful. I have a small flock tho, so everyone is always in my radar. Because the weather is getting colder and they are molting, i have started making 20% protein chick starter wet mash twice a day and leaving access to their 16% protein layer feed free choice. Offering high protein like sardines in water, or sunflower seeds, eggs, fish in moderation will be common as well. Like I tell my girls everynight 'Good luck everyone'!