Not counting hidden grottos.If you can what are the chances of finding one?
-You can also find darmanitan as N's Pokemon in desert resort. -You can get a jellicent in B2 on monday and thursday in W2 -Braviary in route 4 in W2 on monday -Mandibuzz in route 4 in B2 on thursday There are many other ways but these are the only wild ones. -other in game ways are yancy/curtis trades, weather institute deerling but these are not technically wild Source: http://bulbapedia.bulbagarden.net/wiki/List_of_Pokémon_with_released_Hidden_Abilities
No, you cannot. That's why they're Hidden Abilities. Sources are experience and Game Guide.