Only roosters grow the spur. The spurs of a cockerel are used for defense against predators.
Chickens have a spur or claw like growth on the back of the foot used for fighting. Kind of like your thumb or in that area. On the back of the heel if they had one.
yes
what is the function of the spur in the chicken
with a rooster, spur length is a good sign - the longer the spur the older the chicken. Otherwise, it's quite hard to tell. Maybe as the chicken gets older its feathers get shabby. Chickens are normally dispatched before they get too decrepit.
spur gears are used because there are many things such as bicycles that cant exist without a spur gear' > gearboxes, mechanical watches, cam drives
Planetary gears can be spur or helical gears.
The coach's motivational speech served as a spur for the team to push themselves harder in the final minutes of the game.
Spur Gears.
spur
When chickens breed sometimes the rooster will spur the hen. This can cause severe lacerations in the hen. The saddle protects her.
A male platypus has a venomous spur on each of its hind ankles. This spur is used to inject a poison that is strong enough to kill an animal such as a small dog, or to cause a human agonising and paralysing pain. The spur is only used in self-defence, as the platypus never attacks first.