Lêer:Pelecanoides georgicus (South Georgian diving-petrel) (8365384976).jpg

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Pelecanoides georgicus Murphy & Harper, 1916 - South Georgian diving-petrel (mount, Field Museum of Natural History, Chicago, Illinois, USA).

Classification: Animalia, Chordata, Vertebrata, Aves, Procellariiformes, Pelecanoididae


Birds are small to large, warm-blooded, egg-laying, feathered, bipedal vertebrates capable of powered flight (although some are secondarily flightless). Many scientists characterize birds as dinosaurs, but this is consequence of the physical structure of evolutionary diagrams. Birds aren’t dinosaurs. They’re birds. The logic & rationale that some use to justify statements such as “birds are dinosaurs” is the same logic & rationale that results in saying “vertebrates are echinoderms”. Well, no one says the latter. No one should say the former, either.

However, birds are evolutionarily derived from theropod dinosaurs. Birds first appeared in the Triassic or Jurassic, depending on which avian paleontologist you ask. They inhabit a wide variety of terrestrial and surface marine environments, and exhibit considerable variation in behaviors and diets.
Datum
Bron Pelecanoides georgicus (South Georgian diving-petrel)
Outeur James St. John

Lisensiëring

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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/8365384976. It was reviewed on 5 Maart 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

5 Maart 2015

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South Georgian diving-petrel (Pelecanoides georgicus)

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Nikon D70s Engels

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huidig19:54, 5 Maart 2015Duimnaelskets vir weergawe vanaf 19:54, 5 Maart 20151 687 × 1 720 (970 KG)NitrausTransferred from Flickr via Flickr2Commons

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