The basis of breeding for egg color and high productivity, as well as color sex selection of the chicks at hatch, and overall survivability.
When I crossbreed a Rhode Island Reds rooster with a Light Sussex hen, the resulting offspring is a hybrid of the two breeds. The characteristics of the offspring will depend on several factors, including the traits of the parents, the generation of the cross, and whether or not the cross is bred back to one of the parent breeds.
Generally speaking, Rhode Island Reds are known for their hardiness, good egg production, and their ability to adapt well to different climates. They are a medium-sized bird with a deep, rusty red color and a calm, friendly temperament.
Light Sussex, on the other hand, are also known for their hardiness, but are particularly sought after for their beautiful appearance. They have white feathers with black neck feathers and tail feathers, and are a good-sized bird. They are also known to be good layers and have a friendly, docile temperament.
When these two breeds are crossed, the resulting offspring will typically inherit a mix of characteristics from both parent breeds. For example, they inherit the good egg-laying abilities and friendly temperament of both breeds, as well as the hardiness and adaptability of the Rhode Island Reds. They lay a large brown egg of great quality on a minimum of feed. The chicks can be feather sexed at birth so the roosters can be sorted out at hatch time.

Third Cross
If you were to crossbreed the Rhode Island Red/Light Sussex hybrid with a Buff Orpington, the resulting offspring would be another hybrid crossbreed.
Buff Orpingtons are known for their gentle, docile temperament and their soft, fluffy feathers. They are also good layers and are known to be good mothers. When crossed with the Rhode Island Red/Light Sussex hybrid, you may see some of these characteristics passed down to the offspring.
The resulting offspring would inherit a mix of characteristics from all three parent breeds. It’s possible that the offspring could inherit the hardiness and good egg production of the Rhode Island Red, the friendly temperament and good laying abilities of the Light Sussex, and the gentle nature and soft feathers of the Buff Orpington.
However, as with any crossbreeding, there is some degree of unpredictability in terms of what traits will be passed down. Some offspring may take after one parent more than the other, while others may exhibit a more even mix of characteristics.
It’s also important to note that while crossbreeding can result in some interesting and desirable traits, it can also have some downsides. For example, some crossbred offspring may have reduced fertility or be more prone to certain health issues. It’s important to consider these factors before deciding to crossbreed different chicken breeds.
Fourth Cross
Ameraucanas are known for their colorful and distinctive eggs, which can range from blue to green. They are also known for their muffs and beards, which give them a unique appearance. When crossed with the Rhode Island Red/Light Sussex hybrid, you may see some of these traits passed down to the offspring.
Fifth Cross
If you were to crossbreed a Rhode Island Red/Light Sussex/Buff Orpington/Ameraucana mix, the resulting offspring could exhibit a range of egg colors, depending on which traits are passed down.
Rhode Island Reds typically lay brown eggs, while Light Sussex and Buff Orpingtons both lay light brown or cream-colored eggs. Ameraucanas are known for their blue or green eggs, which can vary in shade.
When you crossbreed different breeds, there is some degree of unpredictability in terms of what traits will be passed down. Some offspring may lay eggs that are similar in color to one of the parent breeds, while others may exhibit a mix of colors.
It’s possible that the offspring of this cross could lay eggs in shades of brown, light brown, cream, blue, or green, or a combination of these colors. However, it’s important to keep in mind that egg color is just one factor to consider when selecting chicken breeds or deciding to crossbreed. Other factors, such as temperament, egg production, and hardiness, should also be taken into account.
Sixth Cross
Leghorns are known for their prolific egg-laying abilities and their high energy levels. They are a smaller breed with white feathers and a somewhat flighty temperament. When crossed with the Rhode Island Red/Light Sussex/Buff Orpington/Ameraucana mix, you may see some of these characteristics passed down to the offspring.
The resulting offspring would inherit a mix of characteristics from all five parent breeds. It’s possible that the offspring could inherit the good egg-laying abilities of the Leghorn, the hardiness and friendly temperament of the Rhode Island Red and Light Sussex, the gentle nature and soft feathers of the Buff Orpington, and the colorful eggs and unique appearance of the Ameraucana.
Rotations
Rotational breeding to easily obtainable pure breeds are a good way to maintain selection and highbred vigor. Selecting for high production, efficiency, and health. This crossing scheme also produces a beautiful colorful egg basket resulting in most egg colors.
