The Green-breasted Mango (Anthracothorax prevostii) is the most common resident hummingbird species Sean encounters at Finca Pura Vida in Costa Rica. It’s an especially interesting resident because it has a slower molt than most hummingbirds, leading to a mosaic of patterns of juvenile individuals. They often appear to be stuck in between certain plumage ages. This bird is the adult male with gorgeous rich purple and blue gorget on display. Photographed by RTPI Affiliate Sean Graesser for the Meet Your Neighbours global biodiversity project in Costa Rica while on assignment for the Roger Tory Peterson Institute of Natural History.