Evolution and systematics

The taxonomy of the Certhiidae is somewhat problematic, and on the basis of DNA-DNA analysis comparisons some workers suggest placing 22 genera and about 100 species in the family. Sibley and Ahlquist have further divided the family into three subfamilies: wrens (Troglodytinae); gnatcatch-ers, gnatwrens, and verdins (Poliotilinae); and treecreepers (Certhiinae). Most workers, including the American Ornithological Union, still consider the family to consist of "typical" treecreepers of the Northern Hemisphere (Certhia) and spotted creepers (Salpornis spilonotus) of India and Africa.

0 0

Post a comment