As most of you photographers know, one of the most challenging projects to tackle, is to photograph birds in flight. A few of my other blogging photographer friends have touched on the subject recently. I thought I would put my proverbial two cents worth in about this challenge.
Of course what is needed is a fast shutter speed along with a long lens. Most of the time I am shooting with my Canon 7D or my 70D. My preferred lens is my Canon 100-400mm zoom. Sometimes I use the same camera with my Canon 500mm lens attached, using my tripod with a gimbal head for fast maneuverablity.
For the larger birds, I can use the widest angle of the lens to acquire the bird, then zoom in to pan the camera after locking in my auto-focus. The fact that the large birds, hawks, vultures, pelicans, etc, appear to be flying slower helps quite a bit. As for the tiny birds, well, I practice a lot and therefore get lucky alot.

House Finch in flight. Canon EOS 7D, 500mm lens /1.4 teleconverter. 1/2500 sec, f5.6, ISo 1000
One of those lucky shots was the one above of the House Finch in flight. I was on a porch, with the described setup mounted on my tripod with a gimbal head. The finches were flying back and forth between some shrubs below me. I kept trying to swing the camera as the birds flew, and fortuntely the odds were with me, and I got lucky and captured it with it’s wings spread.

Red-tailed Hawk . Canon EOS 7D, 100-400mm lens. 1/3200 sec. @f6.3, ISO 400. Hand-held.
This Red-tailed Hawk pictured above was somewhat easier. I was driving towards Ballinger when I spotted the bird in the grass off of the left shoulder. I moved quickly to the right hand side of the road, grabbed my camera off of my lap, where I always have it at the ready. By then he had started to take flight. My lens and camera easily acquired him, locked onto the auto-focus. In burst mode I was able to fire off several exposures.

Red-tailed Hawk. Canon 40D with 100-400mm lens. 1/800 @ f6.3, ISO 400. Hand-held.
This photo is an example of being able to pan and therefore not having to use a super fast shutter speed. The hawk and been perched atop a sotol int the desert of west Texas. I had stopped to observe it from about 150 yards. When it decided to take flight, I was ready. I locked in on him and panned the camera. Notice the 1/800 second shutter speed versus the 1/3200 speed in the previous photo.

Red-tailed Hawk – Canon EOS 40D, 1/1000 sec. @ f8, ISO 400. Hand-held.
The shot above was quite easy. He was soaring overhead. I exited the car and just panned as he flew around. Again with burst mode, I got several nice exposures. I liked this pose even though, I clipped a wing a bit.

Great Egret. Canon EOS 7D, 100-400mm lens. 1/500 sec. @ f9, ISO 1600. Hand-held.
The Great Egret was flying slowly down the Concho River in San Angelo. I was able to pan with the slower shutter speed again. The under-exposed dark background is the shadows of a building in the background.

Great Blue Heron. Canon EOS 40D, 100-400mm lens. 1/1000 @ f11, ISO 400. Hand-held.
Of course, what would my post be without a photo of one of my favorite subjects, the Great Blue Heron. This photo was made near Lake Nasworthy here in San Angelo, Texas.
You may click on any of the images to see enlargements.
To update my west Texas “Big Year”, I added one more.
#85 Greater Yellowlegs.
Note: My book, “Birds, Beasts and Buttes” is still going strong. You can obtain one at this link, here. Over 100 of my best photographs.