Which Zebra Finch mutations cause a silky look to the wings by impeding feather barb interlocking, thus hindering flight?
Answer
Eumo and Charcoal
Certain structural mutations in the Zebra Finch directly impact feather quality and function. Specifically, the Eumo and Charcoal varieties are characterized by a noticeable silky look to their wings. This texture results from a physiological abnormality where the feather barbs fail to interlock properly. Critically, this feather abnormality causes a significant functional impairment: it hinders the bird's natural ability to fly effectively. Breeders working with these varieties must make environmental accommodations, such as providing smaller enclosures and easily accessible low perches, to support the birds' limited mobility.
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