Pidgey resembles a small, plump-bodied bird. It is a brown color, with a lighter colored throat and belly. The tips of its wings share this cream color. Both its feet and beak are a pinkish-gray color. Its plumage is fairly nondescript, particularly compared to its evolutions, Pidgeotto and Pidgeot. It has black markings around its eyes and a small crest of brown and cream feathers above its eyes. It resembles other small flying-type Pokémon, such as Starly, Taillow, and Spearow. However, due to the fact that these Pokémon tend to be unique to a region, with the exception of Spearow, it is likely that they are a result of convergent evolution. Pidgey's feet allow it to walk on the ground for a while, but can also reach out and safely land on perches.
Very docile, it usually tries to avoid conflict. If disturbed, however, it can ferociously strike back. It usually hides in tall grass. If attacked on the ground, it will often flap its wings to kick up sand and dust that blinds its opponents and protects itself rather than fight back. Pidgey also creaes a dust cloud when seeking to drive insect prey out into the open. It has an excellent sense of direction and homing instincts. It can locate its nest even when far removed from familiar surroundings. These skills enable to be easily trained to deliver messages. A common sight in forests and woods.
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If you like Pokemon, check out some of my other sprites:

I also love the turtwig chain (esp. turtwig and torterra), erufuun (whimsicott), giratina, dialga, entei, lilligant.
I have too many favourites.