podotheca

anatomy

Learn about this topic in these articles:

In passeriform: Feet and legs
…by a horny sheath (podotheca). Exceptions include some swallows, which have feathered tarsi. Although the various different patterns of scale size and distribution of the normal unfeathered podotheca have been used by some taxonomists to differentiate families or groups of families, study has revealed so much variability in the…
Read More