Birds'feathers, epidermal outgrowths consisting of shafts and veins interlaced with tiny barbs, serve various purposes; some aiding in flight, others insulating their bodies, and still others offering bright displays for mating rituals.
A) feathers, epidermal outgrowths consisting of shafts and veins interlaced with tiny barbs, serve various purposes; some aiding in flight, others insulating their bodies, and still others offering (Lack of main verb in the second part of the sentence after semicolon)
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A) feathers, epidermal outgrowths consisting of shafts and veins interlaced with tiny barbs, serve various purposes; some aiding in flight, others insulating their bodies, and still others offering (Lack of main verb in the second part of the sentence after semicolon)
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