Bill,
I have noticed this quite a bit lately too. Birds moving no matter what the
wind direction is.
Looking at base velocities I did notice very weak velocities on a couple
occasions with
the predominant direction close to the actual wind direction. This could
suggest
birds were not
I’ve noticed via flight call monitoring at this time of year (in NY and
vicinity) that songbirds tend to move every night regardless of cold fronts --
unless there are strong southerly winds or substantial rain events. Later in
the season (mid-September – October) the flights seem more tied to