Solution
HELBIG in BAUER et al. 2005
Little Egret Egretta [garzetta] garzetta
garzetta
Little Egret Egretta
[garzetta] garzetta nigripes
Little Egret Egretta
[garzetta] garzetta immaculata
Western Western Reef Heron Egretta [garzetta] garzetta
gularis
Mascarene Reef Heron Egretta [garzetta] dimorpha
Eastern Western Reef Heron Egretta schistacea
Eastern Reef Heron Egretta
sacra
Snowy Egret Egretta
thula