week 9: specialized bird terms Flashcards
_____ is the voice organ of birds located at the tracheal bifurcation (where the trachea splits into bronchi)
sryinx
_____ are thin walled sacs in the respiratory tract of birds that store air and provide buoyancy for flight
air sacs
_____ is the sternum, or breastbone of birds
Keel
______ is a bony termination of the vertebral column in birds where tail feather attach; also called rump post
pygostyle
______ is the cleft in the hard palate of birds where the nasal passage connects to the mouth
choana
______ are the small feathers that dcover the bases of large feathers on the body; named based on their location
coverts
____ are the primary feathers at the center of the tail
central tail feathers
______ are the large tail feather to each side of the central tail feathers
lateral tail feathers
_____ is the thickened skin at base of external nares of birds, may be different colors in some birds to denote sex
cere
____ is the hard mouth part of the bird that is modified epidermal structure that covers the rostral part of the maxilla and mandible.
beak
____ are caudal to the forehead to the cranial portion of the neck; the top of the head
crown
_____ is the caudodorsal portion of the neck of birds
nape
____ is the hollow shaft at the proximal end of the feather shaft
calamus
_____ is one of the parallel filaments projecting from the main feather shaft; forms the feather vane
barb
____ is one of the small projections fringing the edges of the barbs of feathers
barbules
_____ is the distal end of the feather shaft
rachis
_____ is the common passage for fecal, urinary, and reproductive systems in birds and lower vertebrates
cloaca
_____ is the rectal opening into the cloaca
copradeum
_____ is the esophageal enlargement that stores, moistens, and softens food in some birds
crop
_____ is the elongated, spindle-shaped glandular stomach of birds
proventriculus
_____ is the muscular stomach of birds; also called the gizzard
ventriculus
_____ is the external opening of the cloaca of birds
vent
____ is the portion of the oviduct located farthest from the ovary that adds the shell membranes
isthmus
_____ is the middle portion of the oviduct that separates the albumin and chalaza over the egg yolk and sperm
magnum
______ are clusters of spermatozoa held in readiness in the infundibulum to fertilize the egg as it comes from the ovary
sperm nests
______ is the area of the cloaca in which the ureters and vagina open
urodeum
______ is the portion of the female reproductive tract in birds that produces the shell and shell pigments
uterus
______ is the portion of the female reproductive tract in birds that directs the egg to the cloaca
vagina
in domestic fowl, the vascular, red cutaneous structure attached in a sagittal plane to the dorsum of the skull is called the _________
comb
______ is the appendage suspended from the head (usually the chin) in chickens, turkeys, and goats
wattle
_____ is a projecting body or a sharp, horn-covered, bony projection from the shank of male birds of some species.
spurs
______ is trimming wings of birds to alter their flight, also referred to as ________
wing clipping
pinioning
