I was thinking maybe a good approximation might be the line heading due south from Roosevelt Lake, and whatever the angle is toward where the Moon/Pleiades were. Find the elevation of the Moon at the time, then apply trig based on that estimated distance to get the altitude of the birds. I've seen them pass at least a thousand feet up over Anderson Mesa when organized in the, um, flying V formation. \Brian -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.