Feather Morphology Advanced Biology – Spring 2013.

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Presentation transcript:

Feather Morphology Advanced Biology – Spring 2013

Feathers

First seen in the Jurassic Period

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx.

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx.

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure.

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales.

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions:

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation Sensory?

Feathers First seen in the Jurassic Period bird-reptile Archaeopteryx. Modified keratin structure. Hair, fingernails, and scales. Functions: Flight Insulation Sensory? Sexual Dimorphism / Courtship Rituals

Feather Types Contour

Feather Types Contour Outermost feathers

Feather Types Contour Outermost feathers Strong and stiff for flight

Feather Types Contour Outermost feathers Strong and stiff for flight Each feather controlled by specialized muscles.

CONTOUR

Feather Types Down

Feather Types Down Used in insulation.

Feather Types Down Used in insulation. Very soft and fluffy.

Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks.

Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks. Rachis is missing or reduced.

Feather Types Down Used in insulation. Very soft and fluffy. Barbules lack hooks. Rachis is missing or reduced.

Feather Types Semiplume

Feather Types Semiplume Found between other feathers.

Feather Types Semiplume Found between other feathers. Help maintain warmth AND smooth shape.

Feather Types Semiplume Found between other feathers. Help maintain warmth AND smooth shape. Cross between down and contour.

SEMIPLUME

Feather Types Filoplume

Feather Types Filoplume Simplest of feathers

Feather Types Filoplume Simplest of feathers Almost all rachis and few barbs.

Feather Types Filoplume Simplest of feathers Almost all rachis and few barbs. Aid in structure and sensory.

FILOPLUME

Feather Types Bristles

Feather Types Bristles Very small contour feathers

Feather Types Bristles Very small contour feathers Highly specialized

Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts

Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak

Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback

Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback Insect catching

Feather Types Bristles Very small contour feathers Highly specialized Lack Barbs on outermost parts Usually found near the beak Aid in sensory feedback Insect catching Maybe in protection.

BRISTLES

MORPHOLOGY