Hi all.
Carol Probets' suggestion that an association between White-throated
Needletails and weather applies only to large or widespread flocks
agrees with my observation of approximately 60 WTNs under mammatus
clouds, which are associated with air turbulence, at around 8.30 am on
29 Feb over Black Range State Forest in the Victorian Central Highlands
(37 26 19; 145 37 46). Later that day, from 11.30 am there were 5 WTNs
under a blue sky a couple of km to the south west (37 27 40; 145 36
54). Another fine weather observation, not yet reported, was a single
WTN at Toolangi State Forest, also Vic Central Highlands, at 10 am on 9
Feb, on a fine warm day with no cloud.
When I saw the 60 WTNs there were also several Tree Martins flying below
them and about 12 Dusky Woodswallows lower still. Quite spectacular.
Cheers,
Merrilyn
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