The ringed teal breeds in northern
Argentina, southern and central
Bolivia, southern
Brazil,
Paraguay, and
Uruguay; it is resident or disperses short distances after the breeding season. Upon reaching sexual maturity, ringed teals form strong pair bonds. These pair bonds typically last a single breeding season but can last for the lifetime of a pair. A pair bond begins with the male courting the female. In general, courting consists of large amounts of preening, flashing the iridescent green
speculum, and swimming in figure eights around the female of interest while calling. Once a pair bond is solidified, mating occurs in the water. The nests are usually in tree cavities, but they will also breed in the large stick nests built by
monk parakeets. The nests are lined with down, and the female tends to be the defender of the nest. The male will defend the female against other males and potential predators throughout their pair bond. Females typically lay 6-12 eggs, which are white. The eggs are incubated for an average of 26–28 days. Both male and female participate incubating the eggs, but one captive study shows that the females were solely responsible for incubation.
Chicks Hatched chicks are
precocial, having a layer of
down and effectively walking, functioning, and feeding themselves. Although the chicks hatch with a layer of feather down, it is not immediately waterproof. Until their own
oil glands are fully developed, chicks receive their waterproofing oils from contact with their parents' feathers. Both the male and female play a large role in raising and defending the chicks until fledging at 50–55 days old. The male tends to be the most invested and will often be seen following behind separated or slower chicks. Until fledging, the chicks stay in a close group and learn quickly from their parents how to forage, swim efficiently, and avoid predators. The bonded pair is often able to produce two groups of offspring in one breeding season. The male will continue to care for the first group of chicks while the female incubates the second group of eggs. The ringed teal's pair bonding behaviour makes reproduction very efficient. It is possible for a bonded pair to have laid and hatched up to 24 offspring by the end of a breeding season. == Habitat ==