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| | Sibley-Ahlquist taxonomy - Wikipedia, the free encyclopedia |
 | | For instance, instead of putting the swifts, treeswifts, and hummingbirds in the same order that includes nothing else, Sibley and Ahlquist put them in the same superorder that includes nothing else, consisting of one order for the hummingbirds and another for the swifts and treeswifts. |
 | | Sibley and Ahlquist, though, put penguins in the same superfamily as divers (loons), tubenoses, and frigatebirds; that is, penguins are closer to those birds than herons are to storks. |
 | | Sibley's Classification of Birds, by Eric Salzman, Birding, December 1993. |
| en.wikipedia.org /wiki/Sibley-Ahlquist_taxonomy (571 words) |
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