Real Dictionary

seriema in American English
either of two South American, crested gruiform birds (family Cariamidae) with a long neck, one (Cariama cristata) with long, red legs and one (Chunga burmeisteri) with shorter, black legs
noun: either of two birds of the family Cariamidae, Cariama cristata, of southern Brazil, or Chunga burmeisteri, of Argentina, having long legs, an erectile crest, a short, broad bill, and limited ability to fly

seriema in British English
noun: either of two cranelike South American birds, Cariama cristata or Chunga burmeisteri, having a crest just above the bill, rounded wings, and a long tail: family Cariamidae, order Gruiformes (cranes, rails, etc)