Nick Longrich of the University of Calgary started wondering if Archaeopteryx might have used leg feathers for flying after researchers in China found a fossil of a ancient bird that had long flight feathers on both its wings and its legs.

Flying on wings and legs by Rehmeyer, Julie / Science News for Kids

We describe the results of WNV isolation attempts from cloacal swabs, kidney and spleen pools, and the flight feathers containing vascular pulp (6) of dead American Crows (Corvus brachyrhynchos) and Blue Jays (Cyanocitta cristata) that were found in the field and suspected of being WNV infected.

Corvidae feather pulp and West Nile virus detection by Saito, Emi K. / Emerging Infectious Diseases

The same follicles that generate downy feathers on a newly hatched bird can end up producing flight feathers later in the bird's life.

A Ticklish Debate by PERKINS, SID / Science News

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flight control
flight coupon
flight crew
flight deck
flight engineer
flight feather
Flight feathers
flight following
flight formation
flight indicator
flight information center
flight information region
flight information service
flight level

Flight Engineer Instructor
Flight Engineer's Function Key Unit
flight engineers
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Flight envelope
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Flight Equipment Interface Device
Flight Equipment Rack
Flight Equivalent Unit
Flight Evaluation Block Time
Flight Evaluation Board
Flight Event Analysis Program
Flight Evolution Unit
Flight Examiner

Flight Experiment
Flight Express
Flight Express (Congo DR)
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Flight Ferry
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Flight for Life
Flight for Life (UK)
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Flight from Ashiya
Flight from Babylon
Flight from Death
Flight from Nevèrÿon
Flight from the Dark
Flight game
Flight game
Flight gear
Flight Gear Flight Simulator
Flight Gear Outfitting Facility
Flight Girls
Flight Global
Flight Graphics Display
Flight Guidance & Control System

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