It can flap its wings and achieve flight, but only for short distances. It's often seen by those wandering the desert, and will help them find water.
Cactowl (Cactus-Owl) is the loving name /vp/ has given to this proported Pokemon. It was created during in the days leading up to the first CoroCoro leaks that would give us new information for Pokemon Black/White 2. The idea came from some supposed leaked "rumors" which included new Starter Pokemon, one of which stated the grass starter "Resembles an owl with a flower on head, needle eyebrows, and cactus wings. Seems to be based off the owls that live in cacti."
The drawing was leaked as a fake scan, and had most of the internet, if not just /vp/ in a tizzy. Even though it was eventually proven to be faked when the creator came forward, just about everyone loves Cactowl, some even claiming it to be the new Tentaquil.