When a bird shelters in a tree, it is a form of commensalism. This is where the bird benefits but the tree is unaffected.
Ecosystem
A bird nesting in a tree is an example what type of symbiosis
No, the bird is not taking anything from the tree. A parasite takes something from its host, usually in a way that injures the host while giving nothing back to the host.
Commensalism is a relationship in which one species benefits. The other species not unaffected. An example would be when an animal uses a plant or tree for shelter. An American Robin benefits by making its nest in a Red Maple tree. The tree is not affected.
the bird is sitting on the tree
Yes, tree's can provide, both food, nesting sites and protection from predators. Birds also use trees to shelter from inclement weather.
a vulture lives in a nest in a big huge tree . the shelter is the tree
Poseidons tree was the common tree, Oak, it is not Zeus tree
Mutualism: The Oak tree provides the squirrel with shelter and acorns to eat. The squirrel buries some of the acorns, and does not find all of them. The acorns grow into baby oak trees. The squirrel gets food and shelter, and in turn makes more oak trees.
Like all living things hummingbirds survive by getting the things they need. They need air, water, food, and shelter. Nectar and small bugs are their food and they find water to drink wherever they can. They make nests in tree which is their shelter.
Kingfishers shelter in there nest and in a bush/tree
Margays like to shelter in the hollow of a tree.
A toucan lives in a tree.