chick jumping on the back of hens

[SweetLittleChicks]

Thanks. The chick in question was found dead in its nest. We are hoping it was a rooster. It was exhibiting this behavior last week. We were in love with it, hoping it was a hen, but now that it has died we are trying to console ourselves into believing it was a rooster whom we would have had to rehome. Did you see my other question under emergencies about an older hen's eggs? Do you know whether the eggs of a hen who is 4 might carry genetic defects, similar to the way older women often have babies with birth defects? I can't find any research on this. We were trying to propagate this older hen's offspring. I am wondering whether the chick had a birth defect. She seemed so healthy and happy. We wonder whether the cold got her, although it has been abnormally warm here. The woman who was raising her for me would let her play outside all day (she was an only chick with all adult hen companions). 7 weeks and 4 days old when she was found dead in her nest, no blood. The woman caring for her brought her inside most nights, but her husband had started complaining about a chick inside (messes on the floor) and had said he wanted the chick outside. But it has been no colder than the 30s, and by 7 weeks and 4 days she was fully feathered, so it is a puzzle to us.

No my pullets did to there mother and they ended up being girls it ntarual behavor they jump on the hen to practic roosting al genders of chicks do that