Healthy and steadily expanding.
They were normally only seen in south Florida and south Texas but then started moving north from both directions about 25 years ago.
New Orleans parks now have a huge populations.
About 15 years ago they started showing up & breeding in Alabama. Now just about every golf course pond in south Baldwin County has a breeding pair or two. And they are using nest boxes all over the lower Mobile-Tensaw River Delta.
And like noted, they've moved north into coastal Georgia and South Carolina.
The ones at the colder fringes of the range seem to move south in winter. Very few stuck around into duck season in Alabama and I never saw one while in the blind.
Here in FL, and in water climates, they are year round residents.
They seem to be oppurtunistic breeder, prefer nest boxes but will also nest in just about any sheltered area, even on the ground. Back in Alabama, one nested in a bucket under the boat shed at the Freshwater Fisheries office!