Type: Dragon/Fairy
Classification: Humming Pokémon
Height: 1.5m
Weight: 20.6kg
Ability: Pixilate
Mega Altaria's body is enveloped in its unique feathers, which glimmer with an iridescent sheen. They have grown even larger as a self-protective measure. It sings with a voice that is even more beautiful than before it Mega Evolved. It has a sociable personality and is not timid.
Altaria becomes a Dragon- and Fairy-type Pokémon after Mega Evolving. It gains the Pixilate Ability after the transformation, which makes Normal-type moves into Fairy-type moves. Its Attack and Sp. Attack are also boosted considerably while its Defense gets increased.
Reference and images: Serebii.net
Additional references, images, and information: pokemonrubysapphire.com