Bird Families of the World

Mistletoebird (Dicaeum hirundinaceum), member of Dicaeidae (Flowerpeckers), demonstrates a threesome symbiosis: The relationships with Mistletoe can be descried as mutualism, as both parties benefit: The bird easts the fruits, and spared the plant seeds. But the remains of these fruits are sticky, so the bird scratches its bot on a tree trunk, where the other part of symbiosis take place. Mistletoe bush grew on this tree as parasitic who consume the tree resources until they both die. (an example below).