I have chosen to focus on the structure of feathers and the role they play in the protection of birds.
I will be looking to create a structure than can be changed as it relates to weather, time of day and season. The structure will be based on a walkway and the main cladding of the structure will be based on the structure of feathers, and the role they play with birdlife will be similar to the role they will play with the walkway, opening closing, stretching across and fully enclosing.
"There are two basic types of feather: vaned feathers which cover the exterior of the body, and down feathers which are underneath the vaned feathers.
The pennaceous feathers are vaned feathers. Also called contour feathers, pennaceous feathers arise from tracts and cover the whole body. "
Prum, Richard O. & AH Brush (2002). "The evolutionary origin and diversification of feathers"
"Although feathers cover most parts of the body of birds, they arise only from certain well-defined tracts on the skin."
Pettingill, OS Jr. (1970). Ornithology in Laboratory and Field. Fourth edition. Burgess Publishing Company. pp. 29–58.
"A bird's feathers undergo wear and tear and are replaced periodically during its life through molting. New feathers, known as blood, or pin feathers (depending on the stage of growth) when developing, are formed through the same follicle from which the old ones were fledged. The presence of melanin in feathers increases their resistance to abrasion." Bonser, R. H. C. (1995). "Melanin and the abrasion resistance of feathers". Condor 97 (2): 590–591
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