Thursday, 22 March 2007

Poor visibility = thrushes

Heysham Obs
This morning saw weak frontal cloud and poor visibility. When this happens in March, it often produces a rather autumnal-style grounding of migrant thrushes (and any mist netting usually reveals this to be accompanied by unringed Robins). Grounded thrushes at Heysham are rare in spring with most of them presumably racing overhead during hours of darkness as can sometimes be ascertained by flight calls. A fairly early morning visit saw 15 Redwing and two Fieldfare in the willows to the north of the car park - these flew high inland. A few minutes later, 2 (continental) Song Thrush lifted out of the tank farm scrub and similarly headed inland. More tricky to evaluate was the 'impression' of migrant Blackbird with three males together along the entrance road.

A short late afternoon visit to the outfalls produced the now 'resident' adult & 2 1stW Little Gull. 500 Knot on the mudflats off Red Nab as the tide was ebbing. 2nd year Med Gull & 3 juv Shag seen. Two Raven hanging around the reserve, landing on pylons during the afternoon

An increase in islandica Black-tailed Godwit in the Carnforth Marsh area to 720, including three with colour rings.