Starting things off with a theory about my favorite species.

Alright, I'm going to assume everypony knows that Pegasi can fly. But why? Birds have hollow bones to make themselves lighter, without this they would likely be unable to take to the air. Ponies not only (By assumption) have hollow bones, but are also generally larger and heavier creatures. Add in the fact that the pegasus pony's wingspan does not seem large enough to accommodate for the size and weight of the pony in question, and flight should be impossible. And even if it was, they would need to flap their wings much faster than they actually do in order to remain airborne.

My theory goes to magic. Every pony in the land of Equestria has magic of some kind. Each race utilizes this magic in different ways, some more noticeable than others.

Unicorns use their horns as a focus to direct and manipulate their magic externally, allowing them to directly affect the environment.

Pegasi use their magic to allow themselves to manipulate the weather (And according to my theory, to cultivate the abiliy of flight).

Earth ponies are likely the only Equestrian race that does not and can not use their magic externally. Their magic circulates internally, cullllltivating their naturally superior strength.

But I digress, I'll touch those topics in a later entry. My theory in how the Pegasi use their magic to allow flight involves their wings. Pegasi consciously or unconsciously use this magic to walk on clouds, create lightning, and other weather manipulation feats. I believe that they push minuscule amounts of pegasus magic out of their wings as they flap, and possibly circulate it through their bodies in order to create more push, and lighten their body weight during flight.

By circulating the magic through their bodies, it possibly creates an effect utilizing the cloudy portion of their magic to reduce their own body weight for a period of time. By pushing it out through their wings it could potentially create greater lift, allowing them to fly better and flap at a slower rate than what would otherwise be required.

Thanks for reading through this, and let me know what you think. I plan on releasing other theories about multiple different aspects of Equestria such as different ways magic moves and is used, and maybe even about other creatures such as the manticore or Discord or other things.

Next Blog topic, I'll put it to a Poll the two choices are

Earth ponies, how they might utilize their magic.

Unicorn magic, and how it moves. (I'm fairly certain it moves in circles, spirals and otherwise rotates. I have several pieces of evidence that I believe supports this idea.