White-rumped swift, Apus caffer, at Suikerbosrand Nature Reserve, Gauteng, South Africa Image by Derek Keats Experimental shots of birds in flight. They fly really fast and pass through photographable space in about 500 milliseconds. Great fun to try to catch them, and great exercise getting up off the ground when you fall over. This Gauteng South Africa image was … [Read more...] about White-rumped swift, Apus caffer, at Suikerbosrand Nature Reserve, Gauteng, South Africa