Results 1-3 of 7
The order Pelecaniformes comprises a number of diverse groups of aquatic birds
that share the common characteristic of webbing between all four toes. There are
three main groups (suborders): Phaethontes, the tropic birds; Fre- gatae, the ...
CLASSIFICATION Distinguishing taxonomic features. The classification of the
order Pelecaniformes is based mainly on morphological features. Recent
attempts have been made to clarify relationships by analysis of egg-white
proteins, and by ...
Critical appraisal. The tropic birds (Phaethontes) differ in many ways from the
other members of the order Pelecaniformes and may well be wrongly placed in
this order. They are united to the others primarily by the totipalmate condition, but
What people are saying - Write a review
The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review