What is the relationship between a caribou and bird?

There's no direct relationship between a caribou and a bird in terms of family, species, or even a symbiotic relationship. Here's why:

* Different Species: Caribou are mammals, specifically a type of deer, while birds are, of course, birds. They belong to entirely different classes of animals.

* No Direct Interaction: While birds might occasionally land on a caribou's back, there's no mutual benefit or dependence between them.

However, there are some indirect relationships:

* Predator-Prey: Birds of prey like owls and falcons might prey on caribou calves or young.

* Competition for Food: Some birds might compete with caribou for certain types of vegetation in the tundra.

* Ecological Connection: Both caribou and birds are important parts of the arctic ecosystem and play roles in maintaining its balance.

So, the relationship between a caribou and a bird is largely one of coexistence within the same environment, with some occasional interactions, but no direct, specific connection.