pterylosis

n.

羽序；

Body Pterylosis of Woodcreepers and Ovenbirds (Dendrocolaptidae and Furnariidae)
Natal pterylosis of the northwestern crow, Corvus caurinus
Variability in Body Pterylosis, with Special Reference to the Genus Passer
Pterylosis and Timing of Molt of the Water Pipit
Pterylosis of the Mallard Duck
The Pterylosis of the Andean Condor
The Pterylosis of Podargus: With Notes on the Pterylography of the Caprimulgi
Pterylosis of the Black Vulture
The Pterylosis of "Coua Caerulea"
Description of the Pterylosis of Mesites, with Remarks on the Position of that Genus