A cormorant using her feet to gain enough speed to takeoff.
Here is a cormorant paddling hard on his take-off.
600mm 1/1600 f8 ISO800
A great blue heron takes off from the riverbank, his feet trailing in the water. Herons are great fishing birds, they spend a lot of time standing near the shores of rivers and lakes watching carefully for fish and the right moment to strike.
This photograph was taken with my Canon 7D Mark II camera and a Sigma 150-600 mm lens set at 225 mm. The shutter speed was set for 1/1600 second, the aperture was set to f6.3 and the ISO was set to 800.