Hi all. Being in full recognition of what the previous poster said about chickens being unpredictable living beings and not machines with guarantees, I am wondering if anyone knows to what extent chickens biological processes are influenced by proximity or other environmental factors? For example, estrous synchrony has been reported in some mammals. Not sure about birds.
I have six 11 month old hens, each a different variety, who have not laid a single egg since November. They all molted just their head feathers around then. All are seemingly otherwise healthy. They have free feeding of layer pellets mixed with a variety of seeds, plus they have free range access to my yard about 10 hours each day.
Could there be an environmental factor that has stopped all six from laying for such a long period of time? Do chickens experience estrous synchrony?
I'm not worried about them not laying for so long, as I know it can be normal for some birds, but everyone else I know always seems to have at least one or two hens laying at a given point throughout the winter. How normal is it for all six in a flock to not lay for so long? Or might there be a health or environmental issue that I'm not noticing? Thanks.