An adult female hummingbird has essentially the same appearance as a juvenile bird. A juvenile male bird might sometimes show some streaking on the throat with a hint of red, or black markings. Adult males also have a longer tail. Females and young juvies have a white throat. An adult female might have a stronger green on the crown of the head than a juvenile. This feature might not be visible when they are wearing a Fascinator as might happen when they are being shot by a celebrity photographer, like Dinu. No offense intended, Charline, but when it comes to bird photography the rest of us are just lowly paparazzi. Still, you have a nice composition but perhaps a but over-exposed. I mean, the bird is stark naked!