Why do my roosters only mate with certain hens?

BlueTheBrahma

In the Brooder
Sep 2, 2021
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I currently have 11 hens with two roosters. I don’t care for the eggs being fertilised, but have noticed that one rooster will only mate with my two ISA browns, despite having four Lohmanns, as well as three brahmas and a bluebell who are much larger than my main layers. My largest brahma rooster mates with my older brahma, the lohmanns and the ISAs, but still not the other brahmas or bluebell. One ISA has damage to her wing feathers, while she is molting, there are clear patches where the roosters mount her. I’m going to get a chicken apron, but would like them to start mating with the hens who are larger, as I’d expect it to be more suitable. The younger brahmas are 6 months, but the bluebell and older brahma are over a year old, so why aren’t the roosters mating with them?
Is it a problem for such large roosters to mate with smaller laying hens, or is this just to be expected from sexual dimorphism?
 

BlueTheBrahma

In the Brooder
Sep 2, 2021
46
47
39
I can count, I also have an Easter egger who is quite small, so not really much better to be mated with (but still larger than my lohmann browns).
 

All4Eggz

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Premium Feather Member
Apr 23, 2021
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I agree. Roosters usually have favorites. I once saw my BIGGEST rooster mount my SMALLEST hen.. it was horrifying, to say the least. She almost died :lol:
It's normal that they choose the smaller ones, or sometimes bigger ones. But beware, sometimes injuries are caused from this
 

aart

Chicken Juggler!
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Nov 27, 2012
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Is it a problem for such large roosters to mate with smaller laying hens
Not if they both have good technique.
That's why a female squats when the male mounts her, to help take the weight on her back.

I don’t care for the eggs being fertilised
Then why do you have any males, let alone 2?
 

LaFleche

Meadow Devil
9 Years
Sep 22, 2012
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From my observations in my own flock I can tell that mature roosters usually love to mate with the most fertile hens, no matter their age.

Immature cockerels love to chase the rather defenseless pullets down and force themselves on them.

When there are actively laying hens to mate with, a mature rooster would not bother with those that actually don't lay (molt, too young, sickly or just taking a break).
 

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