Saturday, 16 November 2013

Swift patterns?

A quick flick through the Carmarthenshire moth maps suggests that there may be a few patterns starting to build up, albeit obscured by under-recording.  Here are four Swifts:

Map-winged Swift is decidedly upland and Gold Swift favours brackenny areas, so is slightly upland with some outliers.
 

Orange Swift is widely scattered with no obvious pattern, whereas Common Swift appears markedly southern/lowland.

These local distributions do actually seem to reflect the national frequency of these four species, with Gold and Map-winged Swifts extending considerably further into Scotland than the other two.

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