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
Lady is a Four Letter Word 1975. Lady is a Four Letter Word Lady is a Four Letter Word is a Canadian current affairs television series which aired on CBC Television in 1975. This Ottawa-produced series on women's issues was hosted by Elizabeth Gray with announcer Bob Carl. Topics such as home and workplace, marriage and singleness were featured. A highlight of the series was that persons deemed sexist were written on an "honour roll" of toilet paper. This half-hour series was initially aired locally from 20 January 1975. It was broadcast on the national network Fridays at 1:00 p.m. (Eastern) from 11 April to 30