When 5110 first appeared, the Grants did not know how to classify him.

Where did he come from? Was he a new species of finch, or was he an infertile hybrid of known species? If birds prefer to mate with other birds from their own species, what would 5110's fate be on Daphne where there were no other birds like him?

Genetic testing was carried out on 5110 and the grants concluded that he was a hybrid. He has G. fortis and G. scandens genes.

See below further explanation

Explanation:

When 5110 first appeared, the Grants did not know how to classify him.

Where did he come from? Was he a new species of finch, or was he an infertile hybrid of known species? If birds prefer to mate with other birds from their own species, what would 5110's fate be on Daphne where there were no other birds

Genetic testing was carried out on 5110 and the grants concluded that he was a hybrid. He has G. fortis and G. scandens genes.

He was probably from a G fortis parent and hybrid G scandens.

crossbreeding is when The same species of different features/genetic make up are made to mate with the same of different features/genetic makeup and the product can have an enhanced quality

5110 will be a big bird, if there is an interbreeding between the hybrid G Scandens and G. fortis

When a new infertile hybrid appears in an environment, it feels like an anomaly in the environment and there are no possible measures to classify it as a new specie or a member of a specie just by a physical examination. When 5110 subject appears in that environment it is possible to classify it as a piece of a terminated branch of only one member as an anomaly of the closely related species.

His fate is solely relied on better care of himself for a good life span cause there are no other measures to save him. Futhermore added he is also not a proper member of a specie so no mating oppurtunities at all.