Which mechanical process causes increased drag when flight feathers lose barb interlocking due to mite damage?

💡 Explanation

When flight feathers lose barb interlocking, increased airflow disrupts smooth surfaces, causing increased boundary layer thickness since induced turbulent airflow interacts more strongly with wing surfaces. Therefore, increased boundary layer thickness results, rather than laminar flow, aspect ratio changes, or reduced vortex shedding, which depend on different wing properties.

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