BIOL4404
Ornithology
THIS
PAGE HAS BEEN MODIFIED FOR OUR CLASS FROM ONE OF GARY RITCHISON'S WEB PAGES
AT EASTERN KENTUCKY UNIVERSITY!
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Characters
of the Bill | Characters
of the Feet | Characters
of the Feet - Toes | Characters
of the Feet - Nails | Glossary
of terms
Characters
of the Tail | Feathers
- Shape & Structure | Nostrils
| Modified
feathers
Modified feathers
Contour feathers may be modified to form:
- "horns", as in the Horned Lark
- crests, as in the Cedar Waxwing
- ruffs, as in the Ruffed Grouse
- pinnae, as in the Greater Prairie Chicken
- "ears" and facial discs, as in the Great
Horned Owl
- the speculum on the secondaries of several
ducks &
- rictal bristles, as in the Brown Thrasher
& Whip-poor-will
Note the green speculum of the
Green-winged Teal
See the Patuxent
Bird Glossary for definitions of these terms & many others