Watery poop

[Cholesterol man]

Hi, I have three 17 week old roosters. They are one chicken who poops watery. Very watery as when I see him poop, there will be no poop, only water will be left. Other chickens will poop normally but sometimes watery, but not watery as that chicken. Other symptoms include looking thin. I have no weight scale to measure but it looks like it got thiner than usual. Sorry, it's my first time raising chickens, is it normal for growing cockerels?

 

[Wyorp Rock]

Can you post some photos of the cockerels and their poop?

What are you feeding, including treats?

Crops emptying at night?

Is the cockerel able to get to food/water and is he eating well? Sometimes a bird is kept from food by the others, so take time to see that his crop is full at night before roosting and empty in the morning before he eats.

 

[Cholesterol man]

It's night here so I will take pictures in morning.
In my country there are no grower or starter feed so I feed them boiled/Unboiled rice, wheat, milk. They eat grass in large amount while free ranging unlike my other flock of adult hens.
I am sure all chickens will eat because I have seen all of them eating a full bowl of boiled rice every time I open the door. when I just bought them the chicken who poops watery, start eating it's own poop and once got very sick.

 

[coach723]

They need a source of protein. About 18% of their diet should be protein. If you can feed them fish or eggs that will help, the rice is mostly carbs and not a really nutritious diet for them. If they are free ranging I would think they would be catching bugs, worms, frogs, lizards, etc? With the weight loss I would think either nutrition is insufficient or possible internal parasites, which can also make droppings runny. Too much dairy can also upset the digestive tract.