Little by little I'm getting more confident with shooting flying birds. Especially bigger birds like Ducks, Geese and Herons. This pair of Blue-winged Teal flew overhead as I was shooting a Red-winged Blackbird along one of the service roads at TRNWR. One key is to use the AF-C setting on the camera. This allows the camera to adjust focus while holding down the shutter allowing many pictures to be taken quickly and letting the camera take care of the focus. Another key is overexposing a bit since the birds are usually against a bright sky. Having the darker trees in the background in these images helped with the exposure.