Four frames (KZ2L1554 to KZ2L1557) are similar, and this is the one presented. The male appears to be in the "decisive moment,"
and it flaps its wings to try to maintain balance. The same determined look is on his face, while the female is motionless in bliss, with her head pulled back.
As an incentive to procreation, Mother Nature must have designed this bird act to be equally as pleasurable as that in humans.