The Black-legged Seriema is classified as Least Concern. Does not qualify for a more at risk category. Widespread and abundant taxa are included in this category.
The other, the Black-legged Seriema (Chunga burmeisteri), lives in the chaco region farther south, and is a much shier bird, rarely seen in the open like these birds. The first two photos are of a bird that was foraging in a vacant lot just opposite our hotel at the edge of town. (S5) Red-legged Seriema Cariama cristata S More
The Black-legged Seriema has similar food habits. In Tucuman, Ar- gentina they were often observed foraging near cattle and horse dung. The gizzards of 4 individuals contained beetles, locusts, green leaves, and grass with a few hard seeds and the body of an entire rat or young cavy. Black-legged Seriemas in captivity greedily fed on the bodies of rats and birds. As was the case with the Red-legged Seriema, the prey was beaten on the ground before being consumed (Boyle 1917). Hypothesis. More
The Black-legged Seriema (Chunga burmeisteri) is one of two species of seriemas in the Cariamidae family. It is found in Argentina, Bolivia, and Paraguay. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. References - * BirdLife International (2008). Chunga burmeisteri. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 18 December 2008. More
* The Chunga burmeisteri or black-legged Seriema (which is found around northwest Argentina and in some areas of Paraguay. Relatively small, the black-legged Seriema usually nests high on a tree. Species Description Both the red-legged and black-legged Seriemas are around 80 cm long though the red-legged Seriema is relatively wider than the Black-legged one. They mainly forage using their legs. More
Aspects of the topic black-legged seriema are discussed in the following places at Britannica. Assorted References * description (in seriema (bird)) The black-legged, or Burmeister’s, seriema (Chunga burmeisteri), sometimes called gray seriema, which inhabits wooded areas, is darker and grayer, with a shorter crest and shorter legs. More
Black-legged Seriemas are one of two species of seriemas, the other being the Red-legged Seriema. Foraging in pairs or small groups, they are unable to distinguish venomous vs. non-venomous snakes, which has caused some Seriema deaths. They have a loud yelping call. Farmers use seriemas with chickens to signal with their alarm call when strangers approach, and to kill snakes. Their distinguishing call has often been compared to a yelping puppy. More