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en.wikipedia.org/wiki/Glossary_of_bird_terms

The following is a glossary of common English language terms used in the description of ... As a rule, this glossary does not contain individual entries on any of the ... and doves)—afterfeathers can significantly increase the insulative attributes of ... skin, between the pterylae (feather tracts), which are free of contour feathers; ...

www.answers.com/Q/In_birds_how_do_hooks_increase_the_strength_of_contour_feathers

Hooks increase the strength of contour feathers because it allowsthem to interlock with each other. The process works similar toVelcro.

academy.allaboutbirds.org/feathers-article

I have a bird with PBFD so I'm trying to learn everything I can about feather structure and formation so that I can tell whether or not he is producing healthy ...

www.sciencelearn.org.nz/resources/308-feathers-and-flight

Sep 16, 2011 ... The combination of light weight, strength and shape, as well as precision control, ... Each contour feather can be controlled by a set of specialised muscles, which ... The barbules have hooks that lock the barbs together.

ibawalser.weebly.com/uploads/1/0/1/3/10133014/birdadaptationslab.pdf

In this investigation you will examine bird feathers and eggs. You will also ... How do hooks increase the strength of a contour feather? Part C: Comparing Bid ...

allencentre.wikispaces.com/Bird+Feathers

narrow, stiffer vane edge towards to wind for strength. covered along the leading edge by smaller contour feathers called coverts which shape the airfoil ... Feathers on the alula can spread to make an exta slot and increase lift. ... Streamlining with barbs, barbules and hooks ...

www.britannica.com/science/barb-feather

Britannica does not currently have an article on this topic. ... In many birds, some or all of the feathers lack the barbules or the hooks, and the. ... The typical contour feather consists of a tapered central shaft, the rachis, with paired branches ...

my.kwic.com/~pagodavista/schoolhouse/species/birds/body.htm

To do these things, the body must be light in weight and very strong. ... many ways in which an eagle's body combines low weight with high strength. ... A Bald eagle has more than 7 thousand feathers, but all of them put together ... "Blue Feathers" Secondary feathers can be moved down to increase drag, or up to reduce it.

answersingenesis.org/birds/the-evolution-of-feathers-a-major-problem-for-darwinism

Apr 1, 2003 ... Feathers are complex, designed structures required for flight, and are ... the ' complex morphology' of the flight or contour feather includes a ... Though nearly weightless it has strength. ... The hook of the barbules can clearly be seen. ... by a gradual increase in the size and the protofeather traits of scales.22 ...

creation.mobi/the-evolution-of-feathers-a-major-problem-for-darwinism

For example, the 'complex morphology' of the flight or contour feather includes a long shaft (usually hollow, ... Though nearly weightless it has strength. ... The hook of the barbules can clearly be seen. ... to provide insulation by a gradual increase in the size and the protofeather traits of scales.22 Known as the insulation ...