Chestnut Teal (m):Just Lookin'
Chestnut Teal, Anas castanea
He and the good lady were checking out the hollows in a huge River Red Gum, it would be hundreds of years old, and at least 12m around the girth.
He seemed to suggest that they didn't need my help.
Factoid: Most Ducks don't mate for life, they have a monogomous relationship during the mating season, and then change partners next spring.
Which might explain some of the bizarre activity you see around the average duck pond.