Here we have some juvenile male Green-breasted Mangos (Anthracothorax prevostii) as taken last week in Costa Rica by RTPI Affiliate Sean Graesser. You can see their progress in becoming full adults as their feathers fill in to more brilliant shades. Remember, birds are always usually active in either migrating, breeding, or molting, and it is molting season for many species across our quarter of the world right now.
