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Breeding & Genetics

Guides on breeding stock, mating & fertility, incubation & hatching and genetics & diversity.

Breeding Stock

• Selecting Breeding Stock: Type, Speckling, and Temperament in Speckled SussexHow to choose the hens and cockerels that deserve to pass on their genes, and why a pretty feather pattern is only one third of the decision.

Mating & Fertility

• Hatchability and Fertility: Practical Benchmarks for a Backyard BreederHow to measure what your hatches really achieve, what the industry treats as good, and how to find the stage where you are losing chicks.
• Roosters and Fertility: Flock Ratios, Breeding Pens and Hatching Egg QualityA rooster is not required for eggs but he is required for chicks. How many roosters to keep, how fertility works and how to collect eggs that hatch.

Incubation & Hatching

• Hatching Eggs at Home: Incubator Temperature, Humidity and TurningTwenty-one days from egg to chick. The settings, the routine and the mistakes that cause poor hatches.
• Incubating Speckled Sussex Eggs: Temperature, Humidity, and LockdownA day-by-day look at the three weeks inside the incubator, with extra attention on lockdown, the stage where most home hatches are won or lost.

Genetics & Diversity

• Breeding for Better Speckling: What to Select and What to CullImproving the pattern on a Speckled Sussex takes patience, good notes and a willingness to say no to birds you like.
• Why No Two Speckled Sussex Look Alike: The Genetics Behind the Changing Speckle PatternPigment, feather structure and a lifetime of molts explain why two hens from the same clutch can look like different birds.