Which structural effect occurs when a bird loses several primary feathers on one wing during flight?

💡 Explanation

When primary feathers are lost asymmetrically, the airfoil shape of the wing is disrupted, increasing stall speed due to early flow separation and adding induced drag from the wingtip vortices. Therefore stall speed and drag increase, rather than improved roll control or glide ratio, which require intact flight surfaces.

• Which outcome occurs when a fish's swim bladder overinflates relative to ambient pressure?
• Which consequence results when fur seals experience abnormally warm ocean currents?
• Which altitude change occurs as a condor switches from thermal soaring to slope soaring?
• Which environmental outcome occurs when symbiotic cyanobacteria overpopulate?
• Which auditory masking results when katydids aggregate closely?
• Which mechanism enables fish gills to maximize oxygen absorption in water?