Passeriform - Plumage, Pterylosis, Molt

Passeriform - Plumage, Pterylosis, Molt: Plumage and the number and distribution of feathers of passerines are considered important taxonomic characters, especially in determining the genera, species, and subspecies. The passeriform vocal apparatus exists in four basic types: unspecialized, tracheophone, intermediate tracheobronchial, and oscine.
Passeriform, any member of the largest order of birds and the dominant avian group on Earth today. Passeriforms (or passerines) are true perching birds, with four toes, three directed forward and one backward. These birds occur in abundance on all continents except Antarctica and on most oceanic islands.

Molt Migration in the SJV Region - Sonoran Joint Venture

Pteryla, anatomy

Frequency of wing‐feather replacement resulting from preformative molts

Introduction to the Morphology, Development, and Ecology of Feathers

Stable isotope analysis of an aberrant Painted Bunting (Passerina ciris) feather suggests post-molt movements

Plumages, Molts, and Structure - Tawny Antpitta - Grallaria quitensis - Birds of the World

Passeriform - Plumage, Pterylosis, Molt

Feather Evolution from Precocial to Altricial Birds. - Abstract - Europe PMC

The Basics: Feather Molt All About Birds All About Birds

Bird Plumage Variations and Abnormalities

Long-tailed paradise whydah - Wikipedia

Unraveling a complex alternate molt strategy: more evidence for

Molt strategy and delayed plumage maturation in the Lined

Passeriform - Plumage, Pterylosis, Molt