Early in the breeding season, males typically perform an undulating aerial display called the “sky-dance.”
At the top of each undulation, males hover briefly with their legs dangling and their tails fanned, and then dive downward with their wings drawn in. They may repeat this sequence several times.
While performing the display, males usually carry a fish or nesting material and call repeatedly a “creee” or “creeek creee.”
It has really been a wonderful afternoon