The Life of Birds those birds whose sustenance comes from flesh and their methods of hunting. In New Zealand, Attenborough observes keas, parrots that do not eat meat exclusively, raiding a shearwater's burrow for a chick. However, it is the dedicated birds of prey, such as owls, buzzards, eagles, falcons and vultures, to which much of the programme is devoted. In order to spot and pursue their victims, senses of sight and hearing are very acute. Vultures are the exception, in that they eat what others have left, and once a carcass is found, so many birds descend on it that the carrion seems
Collective noun have originally been plural in concept, referring to mathematic endeavors, but metonymic shift (the shift in concept from "the endeavors" to "the whole set of endeavors") produced the usage of "mathematics" as a singular entity taking singular verb forms. (A true mass-noun sense of "mathematics" followed naturally.) Nominally singular pronouns can be collective nouns taking plural verbs, according to the same rules that apply to other collective nouns. For example, it is correct usage in both British English and American English usage to say: "None are so fallible as those who are sure they're right." In that case, the plural