Quill: Bird Feather ID

AI-powered feather and bird identification. 200+ North American species, 88.9% accuracy. Build your life list and connect with birders.

Quill makes it easy to identify birds from feathers or photos using AI. Whether you found a feather on a hike or spotted a bird at your feeder, Quill gives you an instant identification from over 200 North American species. IDENTIFY WITH CONFIDENCE Snap a photo of any feather or bird and get an instant AI-powered identification with up to 88.9% accuracy. See the species name, confidence score, bird photo, habitat, diet, range, and fun facts. BUILD YOUR LIFE LIST Track every species you identify. Earn achievements, climb milestones, and watch your life list grow with every find. DAILY FEATHER CHALLENGE Test your birding knowledge every day. A new mystery feather is revealed each morning — guess the species before the 8pm reveal and build your winning streak. BIRD OF THE DAY Discover a new species every day with beautiful photos and fascinating facts. CONNECT WITH BIRDERS Share your finds on the Bird Feed, follow friends, and see what other birders are discovering.