Which substance is considered a safe styptic for a broken feather?

Corn starch is recognized as a safe styptic for a broken feather due to its ability to effectively stop bleeding while promoting clotting. When a bird loses a feather, particularly during molting or injury, the exposed shaft can bleed. Corn starch can be applied to the area to help stanch the flow of blood, making it a useful option in avian care.

In contrast, honey, while having some antibacterial properties, does not provide the same immediate clotting effect and may be too sticky for application on feathers. Antiseptic cream could potentially contain chemicals or fragrances that are irritants to birds and may not be safe for use on broken feathers. Vaseline is an occlusive agent that could trap moisture and bacteria, which may lead to further issues for the bird's skin and feather condition. Therefore, corn starch stands out as the best choice for managing bleeding from broken feathers.