Had a close call years ago with my Dad's Varga. On take off what I thought were a couple of black birds setting way down on the runway turned out to be three very large Turkey Vultures. Two went on way and the third went the other way. I dipped a wing, stabbed the rudder and kind of slipped through them. Turns out they were having a snack on the centerline that someone else had hit. A quick radio call to a friend on the field with a shovel took care of the problem by the time we came back.