1-4-2017 MIAMI, FLORIDA - BLACK NECKED STILT (Himantopus mexicanus)

The Black-necked stilt (Himantopus mexicanus) is an American shorebird that lives in wetlands and coastlines. It is often treated as a subspecies of the Black-winged stilt, however, the American Ornithological Society (AOS) has always considered it a species in its own right.

Black-necked stilts have long pink legs and a long thin black bill. They are white below and have black wings and backs. The tail is white with some grey banding. A continuous area of black extends from the back along the hind neck to the head. There, it forms a cap covering the entire head from the top to just below eye level, with the exception of the areas surrounding the bill and a small white spot above the eye. Males have a greenish gloss to the back and wings, particularly in the breeding season. This is less pronounced or absent in females, which have a brown tinge to these areas instead. Otherwise, the sexes look alike. Downy young are light olive brown with lengthwise rows of black speckles (larger on the back) on the upperparts - essentially where adults are black - and dull white elsewhere, with some dark barring on the flanks.

Black-necked stilts occur from the coastal areas of California through much of the interior western United States and along the Gulf of Mexico as far east as Florida, then south through Central America and the Caribbean to Brazil, Peru, and the Galápagos Islands, with an isolated population, the Hawaiian stilt, in Hawaii. The northernmost populations, particularly those from inland, are migratory and spend winters from the extreme south of the United States to southern Mexico, rarely as far south as Costa Rica; on the Baja California peninsula, they are only found regularly in winter. Black-necked stilts are found in estuarine, lacustrine, salt ponds, lakeshores, alkali flats, flooded fields, and emergent wetland habitats; they usually occur in lowlands but in Central America, they can also be found in mountainous areas.

Black-necked stilts are crepuscular birds. They forage by probing and gleaning primarily in mudflats and lakeshores, but also in very shallow waters near shores. Outside of the breeding season, they are gregarious; they feed and roost in groups and migrate in large flocks. They often roost and rest in alkali flats, lake shores, and islands surrounded by shallow water. Black-necked stilts have a very interesting behavior. Since these birds live in areas with hot climates, they have to cool off the nest. To do that, parents will carry water in their ventral feathers to the nest and can make many trips a day. Fall migration of the northern birds takes place from July to September, and they return to the breeding grounds between March and May. Usually, the entire population breeding at any one site arrives, mates, incubates eggs for about a month, and protects and broods the young until they are capable of sustained flight; this population then leaves again migrating in flocks of about 15 individuals sometimes juveniles congregating in small groups and other times siblings with family groups.