When sourcing live birds, prioritize suppliers who provide Veterinary Health Certificates and proof of regular avian flu screenings. Key physical indicators of quality include bright, clear eyes, smooth and vibrant plumage without feather-plucking signs, and clean vent areas. Ensure the birds are weaned and eating independently to reduce mortality rates during transit. For wholesale buyers, it is critical to verify that the birds are captive-bred rather than wild-caught to ensure better temperament and health.