Supermarket sparrows vs a sewage works Yellow-browed

This morning we were tasked with helping to remove a couple of House Sparrows from the back of one of Truro's largest supermarkets. They'd been stuck inside for a couple of months now, so once licences were sorted we were let loose.

It's rather surreal mist-netting in amongst pallets of toilet brush sets, washing powder and nappies, but we were based next to the alcohol section, so not all bad... But once some pallets were moved we could rig up 'Heath Robinson stylee' a single-shelf net at ceiling height, threaded through light fittings, air ducts and water pipes, and a full-height net between the shelving.

Terrible photo of our interesting morning netting site!

Remarkably, with the help of a tape-lure (well MP3-lure) we were eventually able to catch both birds darting through a small gap high up above the shelving. Both were ringed and liberated in a neighbouring garden, so let's hope this is the last we see of them.

Being so efficient at the supermarket, we used the extra couple of hours we had to stick up a few nets at Ponsanooth Sewage Works. There weren't many birds around (apart from a Siberian Chiffchaff, three Firecrest, Green Sandpiper and Woodcock), but one 40' net did catch a little group of warblers, including five Chiffchaffs (all apparently collybita) and a very smart Yellow-browed Warbler; our first of the winter.

These aren't always easy to age, but this bird showed a nice hint of a central crown stripe, which is apparently more frequent in juveniles. This, combined with a rather pointed tail (if a bit fresh-looking), suggested this was a first-winter bird.

Colour-ringing comes good

After a summer of colour-ringing effort, it always pleasing to have the first reports from birders of a couple of our birds. First up was House Sparrow A31, photographed at Old Lizard Head on 30th July. This was too far from where it was ringed, but nice to see such a great photo of one of our birds 'in the field'.

Thanks toTim Bunce for the excellent photo of A31

Then just today we received a report of W:029, a Herring Gull ringed as a chick on the roof of a Falmouth Industrial Estate in July. This bird had foregone the promise of pasties, chips and bins in Falmouth and relocated to Stithians Reservoir, just 10km away. Again not a very long movement, but certainly an interesting one.

Other ringing recently has been a bit hampered by the weather... But between us we've managed a few Storm Petrel sessions, catching good numbers of birds (over 200 for the year now) and also birds from France and the Channel Islands. The latter is notable, with just 11 previous reports of Channel Islands-ringed Storm Petrels in the UK.

A rather poor composite of the 'Jersey' Storm Petrel ring

CES this morning at Gunwalloe was the first productive one for a while, with just under 50 birds caught, including good numbers of passage Sedge Warblers on the first net round. It was also nice to finally catch up with a Cetti's Warbler, the first of the year on CES! Numbers worryingly seem to have been on the decline at the site, with four birds caught by 20th August 2012 and 15 by 20th August 2011.

Despite a missing central tail feather, this juvenile still showed just nine more
- pretty unique in the British bird world.