The roosters will get to the feeding tray feeder than the hens.

Chicken

Chickens are domesticated fowl; they are bred in farms for their meat and eggs. They are omnivores: they feed on seeds, worms and insects found in the soil. Sometimes, they feed on larger animals such as small mice and lizards. The male chicken is called a ‘rooster’ and the female chicken is called a ‘hen’. Baby chickens are called ‘chicks’.

Roosters have large red combs, and these differentiate them from hens. They also have longer tails, and pointed and shiny feathers at the neck and back. Roosters usually perch on a fence or on high ground, crowing early in the day. They do this to proclaim their territory. They also sit on a perch in order to look after their flock; they warn the hens when danger approaches.

Normally, hens lay eggs and look after chicks. They tend to lay their eggs in the same location or a few favorite locations. Hens do not know if their eggs have been fertilized. Thus, they sit on the eggs for 3 weeks. If the eggs hatch, the hens busy themselves with looking after their chicks. Otherwise, they will abandon their eggs, leaving them to rot.
 

The hypothesis holds true: the roosters reached the  feeding tray sooner than the hens.
The domestication of chickens first occurred in India. Persians followed suit, and so did the rest of the world. Chickens are reared for their meat and eggs. Chicken meat is cheaper than other meats. Hence, it is consumed more than any other kind of meat..
 

Use ducks or turkeys instead of chickens.

The experiment can also be repeated to compare chickens of different ages.