Long-tailed finch
The long-tailed finch ("Poephila acuticauda") is a common species of estrildid finch found in Australia; also known as the blackheart finch, shaft-tail finch, Heck's grassfinch, Heck's grass finch, and Heck's finch. It is a predominantly fawn-coloured bird with a pale grey head and prominent black bib and eyes. It has an estimated global extent of occurrence of 1,000,000–10,000,000 km. It inhabits dry savannah habitats in Australia and adapts readily to aviculture. The IUCN has classified the species as being of least concern.
Mangrove finch
The mangrove finch ("Camarhynchus heliobates") is a species of bird in the Darwin's finch group of the tanager family Thraupidae. It is endemic to the Galápagos Islands. It was found on the islands of Fernandina and Isabela, but recent surveys have failed to record the species on Fernandina. It has been classified as critically endangered by BirdLife International, with an estimated population of between 60 and 140 located in two large mangroves on Isabela. A study has shown that the two small populations remaining on Isabela Island have begun undergoing speciation and that one or both populations will eventually become extinct due to a lack of interbreeding.