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) Every day new verses get added on. The songs are coming together piece by piece. The process is unlike any of the other records before this. It's like I'm being gifted the album without having to do the work. I'm creating that in 6 months the project will be complete and then we'll hit the road again with new sounds and new musicians." In 2010, Mraz spent some time in London, England, where he worked on songs for his new album with the producer Martin Terefe and wrote with the British singer-songwriter, Dido. In August 2010, Mraz had a Q&A