Michael Frankis
conehead
Hi Jeff,
Nothing so special, I just used a couple of American field guides. I've never seen Blue-winged before, but have seen several other American warblers on my two visits to the US (not New England, out west, MO to CA). I guess that knowing feather tracts and the sort of things that it is important to look at helps. And Blue-winged is fairly easy to identify, there's others that are much harder
Michael
Nothing so special, I just used a couple of American field guides. I've never seen Blue-winged before, but have seen several other American warblers on my two visits to the US (not New England, out west, MO to CA). I guess that knowing feather tracts and the sort of things that it is important to look at helps. And Blue-winged is fairly easy to identify, there's others that are much harder
Michael