This image are from Trinidad and either just after or during it was raining! The hummingbirds, especially the White necked Jacobins ( like the one above) frolick around in the rain, as if to show off that unlike other birds, hummingbirds are not afraid of catching a cold! They can shrug off all the rain water with a mighty shake and be good as dry in a few seconds ( actually milliseconds!).
For details of my Trinidad and Tobago trip, with more photographs, you can follow these links