There are currently 71 known species of Ardeide which included the Thick-knees. I have photographed 13 (18.3%) of the species in this family of birds.
–American Bittern (Botaurus lentiginosus)
–Yellow-crowned Night Heron (Nyctanassa violacea)
–Black-crowned Night Heron (Nycticorax nycticorax)
–Little Blue Heron (Egretta caerulea)
–Tricolored Heron (Egretta tricolor)
–Reddish Egret (Egretta rufescens)
–Snowy Egret (Egretta thula)
–Little Egret (Egretta garzetta)
–Green Heron (Butorides virescens)
–Western Cattle Egret (Bubulcus ibis)
–Great Egret (Ardea alba)
–Gray Heron (Ardea cinerea)
–Great Blue Heron (Ardea herodias)