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) Love Is a Four Letter Word (album) Love Is a Four Letter Word is the fourth studio album by the American singer-songwriter Jason Mraz, released on April 13, 2012, by Atlantic Records. "I Won't Give Up" was released as the album's first single on January 3, 2012. In November 2009, Mraz posted on his MySpace page plans for a new album to be recorded starting in December, writing, "In 2 weeks time I will enter the studio and begin recording the next album. Only a handful of songs are written and slated but the momentum of love is with me.