Flightless bird requirement for flightlessness. The kiwi does not exhibit gigantism, along with tinamous, even though they coexisted with the moa and rhea that both exhibit gigantism. This could be the result of different ancestral flighted birds arrival or because of competitive exclusion. The first flightless bird to arrive in each environment utilized the large flightless herbivore or omnivore niche, forcing the later arrivals to remain smaller. In environments where flightless birds are not present, it is possible that after the K/T Boundary there were no niches for them to fill. They were pushed out by other herbivorous mammals. New Zealand had
Love Is a Four Letter Word (album) interview with "Spin" magazine in which he said that possible titles for his fourth album were "Peace Canoe" or "The Love Album". On December 8, 2011, Mraz told Jeff Benjamin of "Billboard" that the "album is finished" except for one track he was attempting to re-work as an acoustic version. Describing the album, he said, "It's not a departure in the sound of the genre in any way, it's just different tones, different textures. Musically, I think people are going to like it. It's personal. It's melodic. And it's mellow. There's a couple of up-tempo tunes, but mostly the rhythm