Short background: we bought four hens last year about this time of year. Eventually, one proved to be a rooster, which we are not allowed to have in our area.
We stopped having a rooster.
A year later, someone else in the vicinity has a rooster. We hear him now and then.
Today I came into the backyard near the
chicken run, which usually gets the girls running about either scared of the big thing or looking for treats.
Today they were all three standing together staring out across the neighbor's
yard - and trilling softly. Sounded for all the world to me like
chickens' version of purring.
Yep. Staring longingly in the direction of that new rooster, and 'purring'.