Black-winged/Common Stilt

Himantopus himantopus

Black-winged Stilts Black-winged Stilt Black-winged Stilt
  Black-winged or Common Stilts are from Eurasia/Africa. They usually have an all white head/neck but may have a black cap and/or nape seasonally; the black nape does not join the black wings.
They are occasional, rare visitors to UK from continental Europe.
 
 

               Black-necked Stilt

                     Himantopus mexicanus

 
Black-necked Stilt Black-necked Stilt Black-necked Stilt chick
Black-necked Stilts are from the Americas and have a black cap and black back of neck at all times. The black nape meets the black wings without a white gap.
Black-necked Stilt Black-necked Stilt Black-necked Stilt chick
For both species, the female (centre) has dark brown on her wings rather than the glossy green-black of the male (left), while the chicks (right) have brownish plumage.
Stilt Stilt Stilt