Yes omnivores do. When there is no plant to eat they eat meat or as you said salmon. Or vice versa. So technically you could say omnivores can live on almost anything...just like us humans.
But you do seem to be referring to the behavior of bears.
bear
bear
A bear.
Bears, birds, voles.
Grizzly and Black Bears eat berries during the summer and salmon in the fall. But that is not their total diet, they eat green vegetation, flowers, insects (ants, beetles, bees, moths, etc.), pine seeds, animals (ground squirrels, newborn elk, moose calves), carrion and garbage.
a grizzly bear eats fish and berries in the forest
Yes, a bear is considered an omnivore. A bear eats meat as well as roots and berries.
The Grizzly bear lives in Canada and also eats both plants, like berries, and meat, like deer. That means it is an omnivore.
An Arctic fox is an Omnivore, but eats mostly meat , and sometimes eats berries , during summer months.Arctic foxes, like most foxes, are omnivores, meaning they eat both meat and plants. They will sometimes eat grass to settle their stomachs like dogs do - and while they eat meat when it's available they will also eat fruits and berries when it's not.
No, robins are omnivores. They eat worms and berries, so they eat both!
Omnivore. Herbivore eats plants only, carnivore eats meat only, omnivore eats all.
because it eats meat (like dead animals, worms, etc) and plants (like berries and whatnot)