How Ponies Reproduce

Here's my theories:

The three races are crustacean descendants, but they all differ in their methods of reproduction.

Unicorns: They inject their eggs into the anus of a host. The eggs are expelled via magic, and they stop once they reach the digestive track. Once there, the eggs hatch and commence feeding. They devour the victim from the inside out, which is incredibly painful.

Their preferred victims are earth ponies and other inferior, easy to reach, creatures.

Pegasi: They travel incredible distances to reach an empty beach where they proceed to dig up holes in the sand. They lay their eggs there and bury them, after which they return home. Once the eggs hatch, they make a mad dash for the sea, where they grow up and survive until their wings (which are fins up until adulthood) are able to lift them up. They then migrate back to Equestria.

Earth ponies: They defecate their eggs on top of food sources cows and other lesser creatures ingest, and then the eggs hatch inside the host. Once hatched, the host defecates them and the foals are born. The mother has to shadow the host for the entire gestation period, and then she picks up her newborns.

On Alicorns:

It's a mysterious process indeed. Few people have managed to witness alicorn gestation and birthing, so information is rather scarce.

But, I do believe I can illustrate you in the way of their reproductive mannerisms.

You see, when an alicorn is penetrated by another alicorn's horn, the eggs are released into their bowels just like a regular unicorn would, but here's the catch; whereas in unicorns the babies hatch inside the host, in alicorns the host flies in search of a victim to relocate their offspring.

The alicorn is searching for a particularly powerful unicorn, as they are the only ones with enough magical power to generate the conditions needed for the offspring to survive. The alicorn locates this individual and utilizes its horn to inject a paralyzing poison into its blood system.

Once the victim lies unconscious, the alicorn proceeds to dig up a hole in the dirt and bury the victim inside. After covering up the unfortunate unicorn, the alicorn defecates the eggs on top of the mound, not inside though, as the hatchlings will need to locate the victim via magical sensors on their own. This ensures only the most powerful alicorns survive, and it keeps the species from overpopulating.

Once the prodigies find the buried unicorn, they commence to murder their weaker siblings and ingest them in order to have the strength to dig their way to the host. A mare can have a large ammount of babies per birth, usually a hundred or so, but only two or three survive.

The surviving babies dig their way down to the victim and commence to magically drain the unicorn of its life force. Once this is done, they devour the flesh and fall to sleep a very long slumber.

They wake up when their bodies are fully matured, which is about several thousand years after being born. Once they wake, they immediately set out unto the world, seeking to recommence the cycle of life.