My Broody Brahma

[Cadbury22]

This is Sosoft lying in her nest Broody. When she got Broody she sat around in her nest with her feathers up and she said"BOCK,BOCK,BOCK,BOCK!!!!!!!!!!!" She also stopped laying when she was Broody and refused to leave the coop. She kept pecking and kicking Nugget and Cadbury until they were too afraid to go in the coop to lay or roost,so they layed eggs in a bush and we put them on their perch every night. When Hens get Broody they sweat,so it is good to put and ice bag or wet cloth on their face and head. Also be aware that Broody Hens can get violent towards their flock when Broody because they are trying to defend their (invisible) Chicks.They will stay in the coop even when they have no eggs under them. They will a sit on other Chickens eggs. Broodiness is caused by a hen sitting on a clutch of eggs, so if you want to avoid Broodiness collect your Chickens eggs in the morning or mid afternoon and never at roosting time. Also you can take Advantage of Broody hens by having them sit on fertile eggs and hatch Baby Chicks.Even if there is no rooster in the flock hens still go Broody. Broodiness lasts about two or three weeks.

 

[ChickenCanoe]

Chickens don't sweat. They have no sweat glands. Heat escapes through comb and wattles and by panting.
Broodiness is caused by a hormonal change. This change can be enhanced by the presence of eggs and a comfy nest but isn't caused by the presence of eggs.
Of course they don't want to be disturbed so you likely need more nests.
Broodiness can last months. Incubation is 3 weeks but if they're sitting on eggs, they don't have a calendar and can sit till chicks appear.
A broody hen will always stop laying because if she added eggs after onset of incubation, there would be a staggered hatch which will result in dead embryos when she leaves the nest to care for her live chicks.
If one isn't going to allow the setting hen to hatch eggs, the best thing is to break the broodiness immediately. The longer they're broody, the longer it takes to break.
The tried and true method is to suspend the hen in a wire bottom cage so cool air can get to their underside.
A good broody will not leave the nest except to defecate, eat and drink for a few minutes to an hour - depending on the ambient temperature.
I hope this helps clear up the misinformation.

Since you have a broody Brahma, expect her to go broody often. Have a cage at the ready if you want eggs.

A friend had a broody turkey that she didn't bother trying to break. She was broody for a couple months. Eventually, after physical therapy and $3,000 of vet bills the hen died.

 

[aart]

This is Sosoft lying in her nest Broody. When she got Broody she sat around in her nest with her feathers up and she said"BOCK,BOCK,BOCK,BOCK!!!!!!!!!!!" She also stopped laying when she was Broody and refused to leave the coop. She kept pecking and kicking Nugget and Cadbury until they were too afraid to go in the coop to lay or roost,so they layed eggs in a bush and we put them on their perch every night. When Hens get Broody they sweat,so it is good to put and ice bag or wet cloth on their face and head. Also be aware that Broody Hens can get violent towards their flock when Broody because they are trying to defend their (invisible) Chicks.They will stay in the coop even when they have no eggs under them. They will a sit on other Chickens eggs. Broodiness is caused by a hen sitting on a clutch of eggs, so if you want to avoid Broodiness collect your Chickens eggs in the morning or mid afternoon and never at roosting time. Also you can take Advantage of Broody hens by having them sit on fertile eggs and hatch Baby Chicks.Even if there is no rooster in the flock hens still go Broody. Broodiness lasts about two or three weeks.

So much misinformation above^^^^^^^

Chickens don't sweat. They have no sweat glands. Heat escapes through comb and wattles and by panting.
Broodiness is caused by a hormonal change. This change can be enhanced by the presence of eggs and a comfy nest but isn't caused by the presence of eggs.
Of course they don't want to be disturbed so you likely need more nests.
Broodiness can last months. Incubation is 3 weeks but if they're sitting on eggs, they don't have a calendar and can sit till chicks appear.
A broody hen will always stop laying because if she added eggs after onset of incubation, there would be a staggered hatch which will result in dead embryos when she leaves the nest to care for her live chicks.
If one isn't going to allow the setting hen to hatch eggs, the best thing is to break the broodiness immediately. The longer they're broody, the longer it takes to break.
The tried and true method is to suspend the hen in a wire bottom cage so cool air can get to their underside.
A good broody will not leave the nest except to defecate, eat and drink for a few minutes to an hour - depending on the ambient temperature.
I hope this helps clear up the misinformation.

Since you have a broody Brahma, expect her to go broody often. Have a cage at the ready if you want eggs.

A friend had a broody turkey that she didn't bother trying to break. She was broody for a couple months. Eventually, after physical therapy and $3,000 of vet bills the hen died.

Accurate information here from ChickenCanoe^^^^