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
Fly Like a Bird Eve celebration, Carey performed the first three singles from the album, as well as "Fly Like a Bird" and "Make It Happen" (1991). Months later, following the tragic events involving Hurricane Katrina in the Gulf Coast throughout August 2005, she was featured as a head-lining performer at the "Shelter from the Storm: A Concert for the Gulf Coast" concert charity benefit. Carey, wearing a non-formal ensemble of a pink tank-top and blue jeans, performed "Fly Like a Bird" alongside a large church choir. According to Nielsen Media Research, the special was viewed by over twenty-four million United States citizens, airing