WILD 3580 1st Edition Lecture 31Outline of Last Lecture I. Feather Types II. Number of FeathersIII. Plumage and Molts Outline of Current Lecture I. MoltII. Color Current LectureI. Molt- Partial- Completeo Sequential molt-flight feathers replaced in sequence o Simultaneous molt- flight feathers are replaced all at once (short flightlessperiod)- Humphrey and Parks (1959)o Songbird- pair bonds at breeding grounds Date- May, June, Aug., Feb., Aug.,Feb. Event – Hatch, molt, molt, molt, molt, molt Molt-N/A, prejuvenal, 1st prebasic, 1st prealternate, 2nd prebasic , 2nd prealternate Extent-N/A, complete, partial, partial, complete , partial Plumage- natal down, juvenile plumage, 1st basic (nonbreeding) 1st alternate (breeding), 2nd basic, 2nd alternateo Ducks – pair bonds in winter grounds and migrate together to breeding site (need to plumage breeding feathers earlier) Date- June, July , Aug., Sept., Aug Event- Hatch, molt, molt, molt, molt Molt- N/A, prejuvenal, 1st prebasic, 1st prealternate, 2nd basic These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Extent-N/A, complete, partial, partial, complete Plumage- Natal down, juvenile , 1st basic (eclipse), 1st alternate (nuptial), 2nd basic II. Color- Produced in 2 ways:1. Pigments- chemical compounds that absorb incident light 2. Feather structure - Pigmentso Melanins Blacks, browns, grays, dull reds and yellows Most common types of pigments Can occur in all feathers; almost always in flight feathers Increased amount of keratin o Carotenoids Bright red, yellow, orange Derived exclusively from the diet Most common in the body feathers; rarely in the flight feathers o Porphyrins Browns, reds, greens Most common are brown pigments in owls, pigeons, and galliforms Chemically related to hemoglobin (fluorescent under UV
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