A couple of mergansers sitting on an exposed rock in the canal where the water is low in preparation for skating season. I think this is the same rock I saw red-breasted mergansers sitting on a few years ago. Although taken in the Arboretum, I include it for those who might want to include the Arboretum in their birding forays. Hooded mergansers, common mergansers, cormorants, Canada geese and mallards are also in the canal at the moment. Gillian tells me that she saw 4 ruddy ducks at Dow's Lake on 12 November, even more reason to check out the canal/Dow's lake area over the next while.