The male Anhinga is easy to ID, a pure black neck. The females have a tan fuzzy looking neck.
Anhinga are true tropical birds that have moved north over the years following warmer weather.
The word / name Anhinga is actually a description of the bird in the Brazilian Tupi language. It means Snake Bird or Devil Bird.
This year there were far less Anhinga breeding in the local rookery.
Note; the Tupi language and coastal tribes are extinct now.