I was out to photograph birds along the coast of river Mula, my favorite hangout location. It was morning time and I could find couple of little cormorants out there. I kept observing them and simultaneously setting up my camera.
I began to look through the viewfinder to observe closely and take some pictures. It was observed that, when they are about land they fly very low touching their tail to the water surface. It appeared to me that they use their tail feathers to get the feel of water and decide the exact position to land. Hence the trail made varies; short on some occasions while long otherwise.
Unfortunately, lost all my images from that session.
Here is an image from a different session where you can see Little Cormorant making a trail as it is landing. A long trail made on this occasion.