I should have added a note about behavior--especially the tail wagging of the two waterthrushes.
When teaching beginning birding, I find that people can relate to the following:
Louisiana Waterthrushes move their tails slowly to medium speed, from side to side--like a Cajun waltz.
Northern Waterthrushes move their tails more rapidly, more up and down--like a Yankee Clipper at sea.
On Apr 4, 2010, at 1:53 PM, Edge wrote:
It also pumped it's tail very vigorously and consistently. Does one happen to exhibit that behavior more than another?