Inside the crater of a volcano on Graciosa Island in the Azores archipelago in the Atlantic, an international team of researchers has discovered the bones of an unknown species of extinct songbird, a bullfinch they have named Pyrrhula crassa. The remains were found in a small cavity through which lava flowed long ago. This bird disappeared a few hundreds of years ago due to human colonization of the islands and the introduction of invasive species, as was the case with numerous bird species on other islands, such as the Canaries and Madeira.