Thunk, like most birds, just has one hole for everything, his cloaca.
When he's aroused, out of his cloaca can extend a dick. This dick is thick at the base, and tapered, with one single spiral twist to it. It's naturally lubricated.
Thunk mostly thinks with his beak, though sometimes he'll also get in the mood for some fun. He's not terribly picky with whom he mates with, but the most important thing is that he's always the top.
Thunk can be cajoled into having fun with critters, but simple-minded as he is, he's more in it for his own pleasure. Still, an experienced partner can lead him into fulfilling their needs as well.
As a cramorant, Thunk's digestive system starts with his beak. He has no teeth, but can bite down with the sharp edges. He must make a bobbing motion to swallow. His internal flesh is blackish grey.
His long esophagus makes for a perfect opportunity to show off a neck bulge. Unlike many birds, he does not have a crop, and food goes directly to the stomach.
The stomach is like any other and digests things, and he can't bring stuff back up voluntarily.
The gizzard is a weak organ, made for filtering. Occasionally, once the meat is thoroughly liquified, the indigestibles like fur, bones, clothing, and the like are compressed into a pellet, and expelled out the mouth, but usually they pass along with the chyme.
Everything else proceeds as normal, through the small intestine, the large intestine, and then out.
• Mostly Pred
• Willing Pred
• Unwilling Prey
• Digestion
• Gorging
Thunk is a greedy bird and will attempt to swallow any pokemon that he can get his beak around, which tends to be quite a few. He considers them all fish, even the ones he happens to get on land, though he'll usually avoid those with feathers.
His favorite snacks, when he can get them, are electric types, who are often surprised to find that their defenses are useless when faced with Thunk's unique lightning rod ability.
He will absolutely gorge himself silly when food is abundant, and can conjure up his hurricane beneath his gut so that he can continue to waddle long after he should have ceased feeding.
While he sees himself as a top predator, he is not immune to being eaten himself, though he is a tough creature to nail down.