The Ardeidae – herons+ is a worldwide Family of medium to large species of Type – wadingbird of the Order Pelecaniformes . They typically have long legs, and necks which when flying are curled in, and not held out straight. The Family contains the following categories –
Ardeidae - Herons+ contains the following sub-families...
Herons
Herons+
Egrets
Bitterns
Reef-herons
Pond-herons
Night-herons
To find further information about Ardeidae here are a few more places to look Browse by Taxonomy - Ardeidae Herons of the World HeronConservation