These species went extinct in 2018. More may be doomed to follow in 2019

They'd been on our planet for millions of years, but 2018 was the year several species officially vanished forever.  Three bird species went extinct this year, scientists said, two of which are songbirds from northeastern Brazil: The Cryptic Treehunter (Cichlocolaptes mazarbarnetti) and Alagoas Foliage-gleaner (Philydor novaesi), according to a report from the conservation group BirdLife International. According to BirdLife, the other extinct bird is Hawaii's Po'ouli (Melamprosops phaeosoma), which has not been seen in the wild since 2004 (the same year the last captive bird died). A disturbing trend is that mainland species are starting to go extinct, rather than island species: “Ninety percent of bird extinctions in recent centuries have been of species on islands,” said Stuart Butchart, BirdLife’s chief scientist and lead author on the paper.“However, our results confirm that there is a growing wave of extinctions sweeping across the continents, driven mainly by habitat loss and degradation from unsustainable agriculture and logging," he said.