January 18, 2017 – Masked Duck (Nomonyx dominicus)
These stiff-tailed ducks are found in parts of Mexico, the Caribbean, and Central and South America, as well as southern Texas in the United States. They eat mostly plant materials such as the seeds, stems, leaves, and roots of various aquatic plants, and may eat some aquatic invertebrates during the nesting season. Nesting near water, they build roofed structures among rushes where the females incubate the eggs. Males tend to leave the brood a few days after the ducklings hatch. Black-headed Ducks often lay their eggs in Masked Duck nests in Argentina and female Masked Ducks may lay eggs in each other’s nests in other parts of their range.