The New Encyclopædia Britannica in 30 Volumes: Macropædia : Knowledge in Depth. - 19 Bd, Volumes 1-19Encyclopædia Britannica, 1974 |
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Page 15
... birds that share the common characteristic of webbing between all four toes . There are three main groups ( suborders ) : Phaethontes , the tropic birds ; Fregatae , the frigate birds ; and Pelecani , the pelicans , boobies ( including ...
... birds that share the common characteristic of webbing between all four toes . There are three main groups ( suborders ) : Phaethontes , the tropic birds ; Fregatae , the frigate birds ; and Pelecani , the pelicans , boobies ( including ...
Page 16
... birds use a " Rattling " display . off Ascension Island but in dispersed patterns on Christ- In tropic birds , which do not normally have nest sites in mas Island ( Pacific ) . Breeding in a number of species is the open , courtship ...
... birds use a " Rattling " display . off Ascension Island but in dispersed patterns on Christ- In tropic birds , which do not normally have nest sites in mas Island ( Pacific ) . Breeding in a number of species is the open , courtship ...
Page 452
... birds from the Miocene of western Europe . tip . Vomer present . Leg scales scutellate in front and behind . The dearth of fossils leaves the evolution of existing Moderate or small - sized , dull - coloured birds with an unusually ...
... birds from the Miocene of western Europe . tip . Vomer present . Leg scales scutellate in front and behind . The dearth of fossils leaves the evolution of existing Moderate or small - sized , dull - coloured birds with an unusually ...
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