Sergipe and Rio Grande do Norte, Brazil.
Other rheas were previously separated in genus Pterocnemia, on basis mainly of tarsal scutellation and feathered upper tarsus, but genetic studies show them to be closely related to present species, and probably more aptly considered congeneric#R#R; present species has hybridized with R. pennata in captivity. Several races poorly known, and listed ranges remain provisional; birds of E Bolivia and Mato Grosso do Sul (WC Brazil), currently listed for race araneipes, may instead be referable to albescens. Five subspecies recognized.
Food and feeding
Status and conservation
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