I spoke (or wrote) too soon in post #2 in "Drought affecting Woodswallows". Yesterday, I believe I saw a flock of around 70 Dusky Woodswallows flying quite high. And today there was a flock flying high but I was able to see only two. However, the cacophony of calls suggested there were at least 20. I'm on the dry south eastern slopes of the Mt Lofty Ranges in SA.
