The Blue-winged Teal is typically only seen around the Lake in the late spring as it migrates north to breed. Two visited this morning.
As one watches the Blue-winged Teal swim by, it is easy to wonder about its name: Where is the blue wing? Certainly, the white facial patch is striking, but otherwise it seems merely a rather small speckled duck. 
However, when these ducks fly, the powder-blue wing patches, after which they are named, become apparent. Here the ducks are lifting off from the Lake amidst a shower of splashed drops.
Excellent, demonstrative photos! Alistair, you consistently take such quality photos. Thank you for being willing to share them with us along with your instructive (and often amusing) comments.