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) January 3, 2012. The song peaked at number 8 on the U.S. "Billboard" Hot 100. The song was initially presented as a lyric video around its January release, before another video was released in March 2012. "The Freedom Song" (March 13), "93 Million Miles" (March 27) and "Everything Is Sound" (April 10) were each released as pre-release tracks in the run up to the album's release, with each song having a lyric video on the official YouTube page. Later, "93 Million Miles" was released as the second official single. "The Woman I Love" was released as the third official single