Attenborough CES, Visit 2 - Sunday 12 May

Our second CES session at Attenborough was another nice morning, but low on birds. We finished with 17 in total, and some species were notable by their absence - Blackcap, Chiffchaff, Cetti’s Warbler, Dunnock - all heard but not caught.

The birds that did find the net were: 4 Great Tit, 3 Wren, 2 Garden Warbler, 2 Robin, 2 Song Thrush, 2 Blue Tit, 1 Reed Warbler, 1 Treecreeper.

Entertainment was mostly provided by the invertebrates, with 2 Hornets and 1 Tree Bumblebee successfully extracted from the nets. Lots of damselflies were on the wing, as were Hairy Dragonflies.

The Cuckoo was still present and calling, and we were lucky to see two Swifts in the mid-air act of mating over the ringing base. 

Holly

Treecreeper wing, (HG)

 

Isle of May Visit, 13-20 April

Recently, Kev B, Holly and I had the opportunity to visit the Isle of May with the Cumbrian group. The weather was breezy throughout the week, unfortunately from the north-west. This was far from ideal for bringing in birds or for putting up mist nets. Although it was quiet, we got a few new species from the heligoland traps, including 3 Brambling and 2 Ring Ouzel. On one day we tried a tape lure for the Hoopoe, which had been seen on the island for the past 10 days. However, it seemed uninterested. We also made an attempt for the Storm Petrels, but there was no success on this front either. Spring traps gave us a few Wheatears and Robins. While seawatching by the Low Light, Holly noticed a Puffin stuck in a drainage pipe, with its legs in the air! She managed to rescue it, and passed it to me to ring.

Overall, the trip was a brilliant experience. I enjoyed the isolation and wildness of island life, and sharing it with a great group of people. The best part was being immersed in the life of thousands of seabirds, while trying to count them for the daily log! Thanks to Mike, Frank and Shelagh for including me and all the help while we were there.

Joshua 

Ring Ouzel (J. Phillips)

View from the island (H. James)

Wheatear (H. James)

 

Recent recoveries - passerines

Following on from the last post, here are are few details of some passerine recoveries from between April 2022 and December 2023.

We have a few Lesser Redpoll recoveries from around the UK, which is typical for this species as Redpoll are known to disperse and move around to wherever there is food.

- One bird ringed by us in January 2022 at Bestwood was recaught three months later 2022, 317km North in Peebles on the Scottish Borders.

- Another ringed at Skylarks in October 2020 was recaught in July 2022 in Ceredigion, Wales.

- One ringed in August 2022 at RSPB Geltsdale in Cumbria was recaught by us in Ramsdale three months later.

- And finally, a bird ringed in May 2021 by Thetford Forest Ringing Group was recaught by us in January 2023 at Bestwood.

A Reed Warbler ringed in July 2022 at Manor Floods was recaught three weeks later at Gironde, France, a distance of 922km. Slightly unusual as we don’t catch many Reed Warblers at Manor Floods.

Gironde was also the source of a controlled Redwing ringed at Ramsdale in 2021, which was recaught in October 2022 in France. Considering we catch around 100 Redwing each Winter, we hardly ever get recoveries of this species.

A Blue Tit ringed by Belvide Ringing Group was recaptured by us at Trowell in January 2023, a distance of 12km. Some studies have shown that only 1.2% of British Blue Tits move more than 20km during Winter, so a movement of 12km is fairly significant for this sedentary species.

A female Cetti’s Warbler ringed by Chew Valley in 2019 was recaught by us at Skylarks in April 2023, a distance of 208km. Cetti’s Warblers are colonising more of the UK as they slowly spread North, and it’s usually the females that move the furthest to establish new territories.

A Chiffchaff ringed on the Isle of May, Fife in May 2023 was recaught by us in Bestwood in October of the same year.

A Blackcap ringed by us at Skylarks in September 2021 was caught by a cat in Chester, December 2022. Presumably we caught this one on its westward migration and it would be interesting to know where it had originated from - possibly further east on continental Europe as seems to be the pattern for many birds wintering in the UK.

A Siskin ringed by us ar Colwick in March 2021 was recaught by Grampian Ringing Group in Aberdeenshire, April 2022. 

Holly

Redpoll

 

Recent Recoveries - non-passerines

It has been a whilte since we blogged about recoveries. We detail all the most interesting records in our annual report, but we also try to publish information here when we can. Below are some of the more interesting non-passerine recoveries we've had between April 2022 and December 2023. 

A Common Tern ringed as a chick at Attenborough in 2014 was recaught in Senegal in March 2021 - a distance of 4495km! 

We often receive short-distance Barn Owl recoveries as they move between local nest boxes, but here are a couple of notable movements - a chick ringed by North West Norfolk Ringing Group in 2017 was found dead by us in May 2022 near Elston, a distance of 119km. Another was ringed in Buckinghamshire in 2017 and recaught by us in May 2023, a distance of 151km. Interestingly, the longevity record for Barn Owl is currently 15 years, 7 months and 2 days, and if we recatch one individual later this year we might be on to break that record. A male Barn Owl ringed as a 5 in Gotham on 21/05/2009 was recaught on 15/06/2023 - 14 years and 26 days.

Our colour-ringed Cormorants continue to move around, with several sightings of the same individuals making for interesting life histories as we start to build a bigger picture of their dispersal and seasonal behaviour. All birds were ringed at Attenborough:

- Cormorant CVF ringed as a chick in 2015 was sighted at Holt in Norfolk in January 2023. The same bird spent the Summer of 2019 at Cley Marshes in Norfolk.

- Another Cormorant, CZ3, ringed in April 2023 was sighted only two months later in Merseyside.

- CXS was ringed in 2018 and was seen in November 2022 at Suffolk, and then in August 2023 in Essex.

- CX4 was ringed in 2016, and was seen in September 2022 in Conwy, Wales, but was back at Attenborough a year later.

A Black-headed Gull we ringed as a chick at Attenborough in 2008 was found dead in 2022 on the Isle of Anglesey, Wales. We also have sightings of Black-headed Gulls in Nottinghamshire from South Yorkshire, Sweden, Norway, Lithuania, Poland. And a Black-headed Gull we ringed at Attenborough in May 2019 was resighted in Cork.

On the River Trent, we’ve read colour-rings of Mute Swans from Staffordshire and Greater Manchester. 

Holly 

Barn Owl ringing

Common Tern chick

Tawny Owl boxes

Several group members have been checking Tawny Owl boxes in the last week or two and the emerging picture seems to be average occupency and below average brood sizes (mostly 1s and 2s). A female near Kirklington had first been ringed in 2013 and was at least 3 years old then. She has been processed ten times in the same box with only one year with no breeding in the box. The photos below also show the colour variation in adults well.

Tawny Owl chicks in box (AT)

Female first ringed in 2013 (JL)

A photo showing a bird with multiple ages of feathers in the primaries which can be aged as a '10'. (JL)

(PL)

A very rufous female (PL)

 

Attenborough CES, Visit 1 - Sunday 5 May

This morning we ran our first Constant Effort Site (CES) session of the year at Attenborough Nature Reserve. The aim of the CES is to gather data on the survival and breeding success of birds nationally, with the dates of visits, number and duration of visits, and number of nets all standardised so that any changes in the data are a result of bird populations rather than ringer effort.

We caught a total of 29 birds (four more than our first visit last year), with a good variety of species: 5 Great Tit, 4 Blackcap, 3 Reed Bunting, 3 Robin, 2 Garden Warbler, 2 Treecreeper, 2 Long-tailed Tit, 2 Chiffchaff, 2 Blackbird, 1 Wren, 1 Cetti’s Warbler, 1 Reed Warbler and 1 Dunnock.

The net rides were much drier than last year, and the weather was warm and sunny. We heard a cuckoo, and lots of Willow Warblers even though we didn’t catch any. A range of butterflies emerged in the late morning, we saw our first damselflies, and Josh spoiled us with homemade cake too. 

Holly

Comparing Reed Buntings (HJ)