Sunday 22 December 2013

22nd December 2013 Old Lodge, Ashdown Forest

Redwing 20
Fieldfare 10
Brambling 1
Common Crossbill c.15

'Glip' Common Crossbill recorded at Old Lodge, Ashdown
Flight calls by one or two males recorded at Old Lodge. With two males alighting in nearby trees it was possible to record their calls. Sonograms reveal an identical match to 'Glip' Common Crossbill (see Sonogram 11 d below) that Martin Garner states is the commonest vocal type in the UK http://birdingfrontiers.com/2010/11/28/glip-parakeet-and-british-crossbills/

Sonograms of 'Glip' Common Crossbills from Dutch Birding article by Magnus Robb
Nils Van Duivendijk states at least six types are distinguishable on basis of voice and bill structure possibly representing a cluster of cryptic species. Magnus Robb considers 'Glip' Common Crossbill is one of the two most commonly heard Crossbill vocalisations in northern Europe http://www.dutchbirding.nl/content/journal/pdf/2000-2.pdf