“Rich explained the low relative abundances of vultures and other raptorial groups as consistent with the pattern of relatively low representation in modern avifaunas.”
“Secondly, reference books, for example the major avifaunas and standard works on the identification of Britain's flowers, bryophytes, moths and other beasties I may encounter.”
“Although similar parabolic relationships were observed in two other tropical avifaunas, it may be premature to assess the generality of that relationship.”