>>23246797Delibird isn't technically anything. It vaguely resembles a penguin, but it can fly. That doesn't automatically make it a puffin. That could describe any auk, or Game Freak could've just decided they wanted this penguin to fly.
>>23246823Personally I'm not against more Water/Flyings: it's a good combo. Seabirds aren't limited to it by default though. A frigatebird could be a piratical Dark/Flying type. A gannet could be Fighting combined with Flying or Water and learn full-body brawl moves like Submission and Flying Press. You could do an Electric/Flying albatross that evolves from a literal storm-petrel. GF is pretty good about getting creative with type possibilities.