A 'Shag'
One black and white diving bird is an auk, which includes puffins, guillemots, and razorbills. Another black and white diving bird is a murre.
The plumage of the blue black white bird typically features shades of blue, black, and white.
smew
The unique characteristic of a duck with white and black plumage and a distinctive red face is its striking appearance, which sets it apart from other ducks.
The smallest merganser is called the Hooded Merganser (Lophodytes cucullatus). It is a small North American duck species with striking black and white plumage and a distinctive crest on its head.
The Crested Shelduck is a rare species of diving duck that has a distinctive crest on its head. It has black and white plumage on its body with a chestnut-colored belly. The male and female have similar markings.
The Kittiwake
The large black bird with a white belly, known as the magpie, is distinguished by its glossy black plumage, long tail, and white belly. It also has white markings on its wings and a distinctive chattering call.
The black, white, and blue colors on a bird's plumage can serve as a form of camouflage, helping the bird blend in with its surroundings and avoid predators. Additionally, these colors can also play a role in attracting mates or signaling dominance within the bird's species.
The bird you are describing is likely a Silver Gull. They have white and grey plumage, black-tipped wings, and a distinctive square-cut tail. They are commonly found along coastlines in Australia.
That's a fairly general question, but the American Avocet (in breeding plumage) has a black and white body and an orange neck and head.
Puffins are black on their back and on the top of their head. White on their belly and around their eyes. And they have black and white beaks.