Guernsey Trip 2012

21st May 2012

The first day was spent looking at the site and seeing where we could make catching attempts. After some working out with a very tight net set and some interesting waits for vehicle movements the end of the day was a great success with three catches taken. The most pleasing was 61 new Lesser Blacked-backed Gulls which were our main target species for Paul Veronís project.

22nd May 2012

Slightly more time and a better organised day allowed four catches to be taken. However, the best part of the day was the proportion of Lesser Black-backed to Herring Gulls again and a total of 118 new Lessers was excellent.

23rd May 2012

Back to three catches today and again a fantastic attempt with another 147 new Lesser Black-backed Gulls talk of 500 of this target species for the week was starting to rumble around the team!

24th May 2012

Only two catches today but it was well worth it as we were deliberately and successfully targeting the Lesser Black-backed Gulls. Another 85 new birds in the bag and a bonus Yellow-legged Gull for one of the Guernsey team as a ringing tick.

25th May 2012

A much more difficult day with birds really not wanting to play. Birds seemed reluctant to feed and were certainly not interested in our catching area. Some stoic work from Mel the compactor driver gave us another 48 new Lesser Black-backed Gulls but hot weather also limited the catching options.

26th May 2012

This was the last chance with probably only a single catch possible as we needed to be off the tip early. We only needed 51 new Lesser Black-backed Gulls to make 500 new. However with 28 retraps we were confident we could make over 500 of this species for the week. However, the birds decided they just did not want to play and it got later and later. Of course just when it was a bit too late birds came onto the waste and of course too many birds. There were lots of Herring Gulls at this time but also what looked like about 40-50 Lessers. After a very quick discussion with Paul I took the decision to take the catch and only process the Lesser Black-backed Gulls. It is hard to release Herring Gulls unringed, when you have caught them but we were not able to stay on the tip any longer and would not have had time to finish them all. The 40 new Lesser Black-backed Gulls left us with the final total of 489 ringed. To get that close was frustrating but all in all and given the weather conditions the week before the week was a fantastic success with target species percentage of all catches kept very high.

Summary

Thanks to all the Guernsey team and the tip staff for all their hard work over the week and I am sure Paul Veron is delighted with the results.

Paul Roper Return to home page

Background

For the fourth year running the NTGG have assisted Paul Veron on Guernsey with his gull project, undertaking an intensive week of cannon netting with the aim of catching as many of Paulís study species (Lesser Black-backed Gull) as possible.

Luck was with us picking the only dry week in a long run of wet weather before and after the visit.

It was an excellent week with a final total of 1091 birds caught of which 998 birds almost half of which were Lesser Black-backed Gulls. Thanks to all the team members who helped during the week.


Read the report on the Guernsey Gulls blog


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Catch Totals

21st May 2012

Catch 1

Species New Retrap Total
Great Black-backed Gull 5 0 5
Lesser Black-backed Gull 21 2 23
Herring Gull 50 1 51
Catch totals76379

Catch 2

Species New Retrap Total
Lesser Black-backed Gull 20 0 20
Herring Gull 37 0 37
Catch totals57057

Catch 3

Species New Retrap Total
Lesser Black-backed Gull 20 2 22
Herring Gull 64 9 73
Catch totals841195

22nd May 2012

Catch 1

Species New Retrap Total
Great Black-backed Gull 10 1
Lesser Black-backed Gull53356
Herring Gull 47148
Catch totals1014105

Catch 2

Species New Retrap Total
Lesser Black-backed Gull23 1 24
Herring Gull 9 1 10
Catch totals32234

Catch 3

Species New Retrap Total
Lesser Black-backed Gull17 1 18
Herring Gull 17 1 18
Catch totals 34236

Catch 4

Species New Retrap Total
Lesser Black-backed Gull15 5 20
Herring Gull 32 7 39
Catch totals471259

23rd May 2012

Catch 1

Species New Retrap Total
Great Black-backed Gull 10 1
Lesser Black-backed Gull37542
Herring Gull 66874
Catch totals10413117

Catch 2

Species New Retrap Total
Lesser Black-backed Gull47 3 50
Herring Gull 55 7 62
Catch totals10210112

Catch 3

Species New Retrap Total
Lesser Black-backed Gull 633 66
Herring Gull 164 20
Catch totals79786

24th May 2012

Catch 1

Species New Retrap Total
Lesser Black-backed Gull68270
Herring Gull 32436
Catch totals1006106

Catch 2

Species New Retrap Total
Great Black-backed Gull 10 1
Lesser Black-backed Gull17320
Herring Gull 31132
Yellow-legged Gull 10 1
Catch totals50454

25th May 2012

Catch 1

Species New Retrap Total
Lesser Black-backed Gull22325
Herring Gull 28331
Catch totals50656

Catch 2

Species New Retrap Total
Lesser Black-backed Gull26127
Herring Gull 13417
Catch totals39544

26th May 2012

Catch 1

Species New Retrap Total
Great Black-backed Gull 30 3
Lesser Black-backed Gull43343
Herring Gull 05 5
Catch totals46851

Trip Totals

Species New Retrap Total
Great Black-backed Gull 11 0 11
Lesser Black-backed Gull 48937 526
Herring Gull 49756 553
Yellow-legged Gull 1 0 1
Totals998931091