However, some Taiwanese populations also breed in geothermal hot springs.
However, some populations breed year round.
"He thinks the original population here was breeding stock."
Indian populations breed between April and June, although earlier breeding has been recorded at lower altitudes.
Nola is not fertile so this captive population is not breeding.
The population become stable and healthy, and has been breeding and growing in the wild each year.
This led to efforts to remove some hybridized populations so native populations could breed more readily.
Significant local populations of black swan, pukeko, and grey duck also breed in the area.
However, the populations in desert regions will breed whenever rain occurs.
Some populations breed in the peninsular region but are very local.