Those are round worms.
Ivermectin lost its effectiveness on poultry parasites years ago, especially with routine exposure.
You need to get some Valbazen, typically under the brand SafeGuard.
Safeguard 10% Liquid Goat Dewormer or 10% Equine Paste dose is 0.23ml per pound of weight given...
Cockerel, the red wings (which aren't supposed to be there for that color) and black feathers say male. Female dark brahma are gray Partridge. and don't have the black feathers.
https://www.backyardchickens.com/gallery/screen_recording_20250928_201914_firefox-mp4.7973434/
Still having the issue, I've never seen this before. It's not problematic but it is odd.
That I didn't briefly consider hitting a coworker I often complain about with a heavy, blunt instrument. Pretty sure I'm going to quit if things don't change rapidly.
Forget the shirt, I'm worried about YOU.
However, if it's from one of your neighbors perpetually yapping dogs, you absolutely have legal precedence to make the dog go byebye.
You don't want heat retention, you do however want something that dries quickly.
And yes, they still need roost bars, you don't want them to sleep in the boxes.
The only difference in winter chicken keeping vs summer, for most places, is making sure the wind can't blow on them directly and...