Whiskered/White-winged Black Tern at Lake Cargellico

Hi Birders First, many thanks to all of you who responded to my identification request, on and off-line. I don’t often participate in the birding-aus chatter but am always impressed at the knowledge and generosity of others. Lots of good pointers and photos which I devoured. What a great bunch you all are! I’m going to go for Whiskered on the basis that I don’t have enough skills with either bird to decide therefore go for the most likely! The lesson learned is that I have to be a lot more observant while out there You’d think that after decades of birding I might already know this!! Thank you for all your help and advice Bob