Common species include osprey, great blue heron and the woodcock, whose unusual mating ritual may sometimes be observed by visitors.
en.wikipedia.org The rarity of observations of specimens and the extreme difficulty of observing them alive, tracking their movements, or studying their mating habits militates against a complete understanding.
en.wikipedia.org In most species, the males' eyes are large and the front legs unusually long, for use in locating and grasping females during mid-air mating.
en.wikipedia.org The precursor to, for example, a wing, might originally have only been used for gliding, trapping flying prey, or mating display.
en.wikipedia.org A remarkable feature of this species is that the males show complete die-off after mating, leaving the females to raise the young alone.
en.wikipedia.org