it is on top of their heads
When they get the injections from a rooster's comb, the rooster does have to be killed. They can get rid of a rooster's comb without killing it but it has to be on the first day that it is born.
It's called a rose comb usually a rooster breed from Spain.
If they have a comb
Red.
It is called a comb.
The prepositional phrase in the sentence is "with the zigzag comb," which provides additional information about the White Leghorn rooster.
The cock comb, or crista galli, is an upward protrusion located on the top of a rooster's head. It is made of fleshy tissue and plays a role in communication and mating displays among chickens. The size and color of the comb can vary depending on the breed of the rooster.
A rooster's comb is mainly used for regulation of body heat.
"With the zigzag comb"
The thing on a rooster's head is called a comb.
A Leghorn rooster is a large white bird with a red comb.
"With the zigzag comb"