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Ovulation

The release of a mature follicle (yolk) from the ovary into the oviduct, where it can encounter sperm released from the storage tubes.

Ovulation — The release of a mature follicle (yolk) from the ovary into the oviduct, where it can encounter sperm released from the storage tubes.

Sperm storage tubes — Specialized anatomical structures located in the chicken's vagina that store spermatozoa, allowing for fertile egg production without continuous mating.

Sexual maturity — The developmental stage at which a bird's reproductive system becomes functional, triggering the sequential growth and color change of ovarian follicles.

Insemination — The introduction of semen into the female reproductive tract, which can occur naturally through mating or artificially to fertilize the ova.

Vas deferens — The duct in the male avian reproductive system that transports sperm from the epididymis to the cloaca for ejaculation.

Ovum — The female gamete carried within each egg produced by the hen, which can be fertilized internally before the egg white and shell are deposited.

Follicles — Thousands of small egg cells organized in clusters within the ovary that grow sequentially once the bird reaches sexual maturity.

Left ovary — The only ovary that fully develops and becomes functional during incubation and the subsequent life of the female bird.

Infundibulum — The specific region of the avian oviduct where the released spermatozoa meet the egg yolk and where fertilization takes place.

Testes — The primary male reproductive organs in birds, which are ellipsoid, light yellow but appear red due to surface blood vessels, and located internally along the backbone.