23 Sep 2019

15 Sep 19 - Migrant Hawker

Light Northerly winds, high pressure & clear skies meant the conditions were sunny & pleasant to be out Birding at St Aldhelms Head. There were large numbers of Hirundines moving slowly over the Head, but on a broad front & generally feeding. The movement was only visible by the periods of low Hirundine numbers. There were fifteen Wheatears & a small scattering of Warblers & other typical migrants. Perhaps the most interesting was this Migrant Hawker which was patrolling the trees by Trev's quarry (AKA the Two-barred Greenish Warbler site). It got me thinking. Most of my sightings of this species have been like this, with Migrant Hawkers patrolling or perching on downland, with no nearby water sources. The nearest water is a small pool of water trapped by a slippage on the undercliff: it is over a half mile away. The Winspit sewerage pond and garden ponds in Worth Matravers are over a mile away. Apparently, this is typical behaviour for the species. Migrant Hawkers are happy to feed well away from water before they are sexually mature & may only appear at water when they are ready to breed.
Migrant Hawker: Male. Perching high up in a tree
Migrant Hawker: Male. It briefly perched low down as I walked back to the car
The larger Dragonflies generally seem to be very territorial on breeding territories. However, Migrant Hawkers seem to be happy in groups before they move to their breeding territories as the next photo shows.
Migrant Hawker: Again a non-breeding location (11 Aug 14)

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