Showing posts with label Lesser Whitethroat. Show all posts
Showing posts with label Lesser Whitethroat. Show all posts

Friday, 2 October 2015

My diary from Shetland and Fair Isle - September 2015

I was intending to update my blog on a daily basis whilst up on Shetland and Fair Isle, but a combination of slow internet access and evening socialising meant it just did not happen. Instead, below is a summary of my trip, with some of my better images, and some record shots. 

My trip involved four nights of Shetland, one before and three after visiting Fair Isle and six nights on Fair Isle. The group included mainly a team from the BTO, Andy Clements, Paul Stancliffe, Nick Moran, John Marchant and Stephen McAvoy with Miranda Gomperts, Andy Mason, Rick Goater and me. For me, it was only my second visit to Shetland and Fair Isle and that was many years ago, so I had been eagerly anticipating the trip for a while.

17th September - Shetland
I flew into Sumburgh around mid afternoon and immediately headed up to the lighthouse where I met up with Hugh Harrop and Junt Hunt, both of who I knew from previous trips guiding across the Bay of Biscay for Company of Whales. The target bird here was Western Bonelli's Warbler, which was difficult to say the least, but ultimately gave some reasonable views. Other species included Common Swift (3), Spotted Flycatcher, Lesser Whitethroat, Goldcrest, Willow Warbler and Robin. At Sumburgh Quarry there was little of note, with Blackcap and Wheatear the only birds.

I spent a productive couple of hours are Grutness, where I picked up a Pied Flycatcher, another Willow Warbler and my first Yellow-Browed Warbler of the trip in the gardens.  


Pied Flycatcher - Sumburgh, Shetland

On the freshwater pools by the Quay two very confiding Little Stints were present, one of which was much darker than the other. This bird had me thinking for a while, but despite being darker, all the features pointed to Little Stint.

Little Stint - Grutness, Shetland
Little Stint - Grutness, Shetland
Little Stints - Grutness, Shetland

18th September - Fair Isle
I met the rest of the team in Lerwick Harbour, as they had got the overnight boat from Aberdeen, then Paul and I headed to Tingwall for our flight. Given the size of our group we could not all get on at once and so the remainder of the team were planning to get the afternoon flight.

On arriving we walked to the Bird Observatory, birding on the way. After a quick cup or tea and welcome we set off again. The species of note included Hen Harrier, Reed Warbler, Yellow-browed Warbler, Barred Warbler, Chiffchaff, Wigeon, Snow Bunting, Ruff, Wheatear, Whinchat and Red-breasted Merganser. A lingering juvenile Pallid Harrier was obviously one of our target birds, and despite other birders saying how easy it was to see, we did not connect with it until about 4pm, so after six hours birding.


Pallid Harrier (Juvenile) - Fair Isle
Pallid Harrier (Juvenile) - Fair Isle

Species such as Rock Dove, Black Guillemot, Hooded Crow, Twite and Bonxie were clearly good birds for someone based on the south coast of England, but since they are common up here I have not mentioned them. After dinner we headed down to the Havens, just by the Obs as one of the wardens had found a Red-breasted Flycatcher their. Initially it was a bit flighty but eventually settled down to give some good views.


Red-brested Flycatcher - Fair Isle

19th September - Fair Isle
Today was mainly about cetaceans, with a pod of Orcas found by Nick before breakfast and then Risso's Dolphins and Harbour Porpoises recorded throughout the day in good numbers. Bird wise the notable species were Yellow-browed Warbler, Spotted Flycatcher, Ruff, Willow Warbler, Chiffchaff, Common Rosefinch, Whinchat, Robin, Sparrowhawk, Snow Bunting and Purple Sandpiper.


Spotted Flycatcher - Fair Isle
Common Rosefinch - Fair Isle
Snow Bunting - Fair Isle

20th September - Fair Isle
I did the pre-breakfast trap round in the morning and was rewarded with a Pied Flycatcher, Blackcap, Song Thrush and a couple of Goldcrests. As we had birded the south of the Island for the last few days we decided to head north today, but were soon heading back south when news of a Blyth's Reed Warbler broke. This was a new species for me and one I have often imagined catching at Titchfield Haven so it was really good to catch up with one and also get to see it close up in the hand.

Blyth's Reed Warbler - Fair Isle
Blyth's Reed Warbler - Fair Isle
Blyth's Reed Warbler - Fair Isle

Other highlights included Merlin, Common Rosefinch, Pallid and Hen Harrier, Barred Warbler, Willow Warbler, Golden Plover, and Whinchat.

21st September - Fair Isle
Today was the day of our bird race. We split into three teams, Andy C, Rick and Miranda; Nick, John and Stephen and Paul, Andy M and me. It was just a bit of fun really, but we were all desperate to win, and at times it was like watching a scene from Dad's Army as Nick blew his whistle to get his team back into line. In the end Andy C's team won with 61 species, my team came second with 61 also, but one of ours was a fly over Redpoll, which didn't count as we couldn't ID it to species (we weren't bitter at all) and Nick's team got 60 species. 

As we were working our way around the island it became apparent that we were experiencing a massive fall of Yellow-browed Warbler's; they were just everywhere. The official total was 53 which was a Fair Isle record in one day, but we all felt it could have been many more than that. Subsequently that total has been surpassed with a day total of over 70 birds.

Yellow-browed Warbler - Fair Isle
Yellow-browed Warbler - Fair Isle

Species highlights included Common Rosefinch, Fieldfare, Greenshank, Pallid and Hen Harrier, Blyth's Reed Warbler, Jack Snipe, Merlin, Kittiwake, Goldcrest and Whinchat.

22nd September - Fair Isle
The pre-breakfast trap round produced Barred Warbler, Yellow-browed and Robin with others caught throughout the day. Yellow-broweds were still abundant today, and the most notable species. Others included Jack Snipe, Ruff, Hen Harrier, Meadow Pipit, Willow Warbler and Blackcap.


(Fair Isle) Wren Troglodytes troglodytes fridariensis - Fair Isle

23rd September - Fair Isle
A pre-breakfast wander produced Ringed Plover, Dunlin, House Martin and a Collared Dove. After breakfast we headed south again; Yellow-broweds were still everywhere but there was a bit more variety and the notable species included Jack Snipe, Redwing, Goldcrest, Grey Wagtail, Slavonian Grebe, Grey Plover, Redshank, Purple Sandpiper, Knot, Merlin, Hen Harrier and a very obliging Lesser Whitethroat.


Lesser Whitethroat - Fair Isle
Merlin - Fair Isle

The most notable thing about today was the discovery of a long dead bird in the Gilly Burn. It was a small passerine that was very decomposed but had orangey underwing coverts which lead us to believe it was a Redstart. Closer inspection revealed that the bird was wearing a ring which turned out to be Dutch (Arhiem NL, Holland - V626386). We left all the details, and the ring with the Obs and hope to receive the details at some point in the future.

24th September - Fair Isle and Shetland
It was departure day for us today, and once again we had to split up as we could not all get off on the same plane, Stephen chose the Good Shepherd as his preferred means of transport. Paul, Andy, John and I had the afternoon flight and spent our remaining tome in the south. We didn't add any new bird species but did pick up a Painted Lady butterfly, our first of the trip. Yellow-broweds were still the most numerous migrant. Other notable species included Common RosefinchChiffchaff, Willow Warbler, Goldcrest, Collared Dove, Redwing, Robin and Lesser Whitethroat


Common Rosefinch - Fair Isle
Great Skuas (Bonxie) - Fair isle

After spending the rest of the day birding mainland Shetland we all met up in Lerwick and ordered some food. We had a bit of a tight schedule as Andy C and Nick had to give a talk at the Shetland Bird Club and needed to be there for 7pm, it was now 5:35pm. My phone rang just as we sat down to eat: it was Hugh Harrop telling me to get to Quendale Mill now at a Thick-billed Warbler had just been found. We could have been there in half an hour, but that would have not given enough time get back to Lerwick for the talk, so we chose to stick together and hope it it was still there in the morning.....alas it was not.

25th September - Shetland
We spent much of the morning at Quendale, working the area where the Thick-billed had been and with nothing to show for our efforts than more Yellow-browed's, a Merlin, a Reed Warbler and a couple of Blackcaps, we eventually headed off. We stopped at a few other places afterwards, but by mid afternoon we had to head back to the port at Lerwick so the team could catch the overnight boat to Aberdeen.


Greenland Wheatear 


I was staying on Shetland until Sunday and so spent the remaining hours of daylight birding Ness of Sound, and the area near to my B&B.

26th September - Shetland
It was a dreary start today but I decided to head to the northern part of mainland Shetland as I had not done this area yet. Yellow-browed's were present in virtually every bit of cover I stopped at, but otherwise there was little of note. I headed to the village of Melby but recorded little of note. Species included Blackbird, Whooper Swan, Greylag Goose, Ringed Plover, Common Gull and Raven.


Whooper Swan - Shetland
Whooper Swans - Shetland

I stopped briefly at Weisdale Voe and picked up an adult Little Gull in the gull flock and then got a text from Hugh, Lanceolated Warbler at Dale of Walls. I had just come past there and knew exactly where it was. As it turned out, the whole experience was grim, with this poor bird being flushed from pillar to post, and not being given a chance to settle. I did eventually get some ok views, but most of the time it was flight views as it flitted from one bit of cover to the next. My final stop of the day was The Wart, Sandwick to see an American Golden Plover in with the European Goldies. A small flock of Pink-footed Geese heading south were the final species of the day.

27th September - Shetland
My final day started with some birding around my B&B and some still very common Yellow-broweds and then I headed back south. I called into Sandwick on the way to see the American GP in better light, then to Quendale and finished up at Grutness, and within in easy reach of my flight. Yellow-browed's were numerous throughout the rest of the day and other final day highlights included Sedge Warbler, Merlin, White Wagtail, Yellow wagtail species, Sanderling, Willow Warbler and Goldcrest.


American Golden Plover (left) with European Golden Plover - Shetland

All in all a cracking trip, some great birds, great company and superb whiskey. The trip was only slightly soured by the actions of some at the Lancy.

Saturday, 12 September 2015

A hand-held Wryneck and mid-September bird ringing update

It has now been a few weeks since my last ringing update from the Haven, other than the Barred Warbler posts of course, so I thought it was time to do so. 

Our ringing totals have been steadily building and as is typical during September we have started to to see a shift from Acro's (Reed and Sedge Warblers) to Sylvia warblers, with the Blackcap being the commonest. Our daily ringing totals have been below average, with the highest total being 168 new birds on 7th August and 5th September. Grasshopper Warbler numbers have been more typical, but we have not recovered from the poor start, and the current total is 111 for the year. Our best days have been 18 on 28th August and 15 on 1st September.

A comparison of ringing totals from 2010 (up to 14th Sept 2010 - 2014, up to 11th Sept 2015) paints a very mixed picture with Reed Warbler numbers at their highest over the six year period, and already getting close to last years total of 693. That total was the second highest ever, the highest was 778 in 2002, but that was when we were ringing in two locations, and therefore cannot really be included in the comparison. 

Blackcap numbers are also very high and at this point in time are ahead of last years total, which ended up being our best year ever with 806 birds. Cetti's Warbler numbers are also above average for the time of year. Willow warbler, Chiffchaff, Whitethroat and Garden Warbler numbers are all slightly below average, but the biggest loser is the Sedge Warbler. To date its total is over 30% down and represents the second lowest total in the six year period, the lowest being the wet summer of 2012.


Summary of Ringing Totals for Key Species 2010 - 2015
Summary of Ringing Totals for Key Species 2010 - 2015

We have of course had quite a few highlights this autumn, and as well as the obvious, we also caught our fourth ever Wryneck on 1st September. With so many being reported along the south coast, we had hoped it was only a matter of time before one turned up in our ringing area. Unfortunately, it turned up on a week day so Duncan and I were at work and Barry got to enjoy the stunning bird.

Wryneck - Titchfield Haven 1st September ( B. S. Duffin)

September 5th delivered our ninth ever Tree Pipit, a species which always provides a challenge for our trainees, to ID and to age. Based on a combination of pale fringed wing coverts and pointed tail helped us age this bird as a juvenile.

Tree Pipit - Titchfield Haven
Tree Pipit - Note the pale fringing to the medium and greater coverts identifying the bird as a juvenile
Tree Pipit - the pointed tail feathers are a typical feature of a juvenile

We have also caught three Lesser Whitethroats this year, which doesn't sound many, but for us it represents a good year. I have checked the wing formula of each one, but they have all proven to be European Lesser Whitethroats Sylvia curruca curruca. One bird was an adult so we were able to compare the tails of the two birds which was good value.

Lesser Whitethroat - Titchfield Haven
Lesser Whitethroat - adult tail
Lesser Whitethroat - juvenile Tail

To date we have ringed 2212 birds of 29 species, which is below average but on a par with last year. I will be heading up to Shetland and Fair Isle for 10 days with a team from the BTO on Thursday 17th and so am hoping that nothing too exciting turns up in the nets whilst I am away.

Friday, 28 August 2015

Titchfield Haven Bird Ringing - 28th August 2015

With a four day weekend ahead of me, it seemed like to perfect way to kick it off was a ringing session at The Haven. The end of August is now fast approaching and I will do a summary of where we are totals wise then, but as todays session was a pretty good one, I thought it warranted a short blog post. Barry had only been able to do one session so far this week because of the appalling weather, but yesterdays session had resulted in 10 new Grasshopper Warblers, so it was worth the effort.

The conditions looked ideal for another session this morning with a clear night, and a bright and wind less morning, and it was clear it was going to be good as our nets were dripping with birds first thing. As it happened things didn't end up as good numbers wise as we thought with under 180 birds were trapped, but we were treated to our first Common Redstart and Lesser Whitethroat of the year.



Juvenile Common Redstart

The Common Redstart was a juvenile and there was no evidence of a dark throat or grey feathers in the crown, so was probably a female. Whilst I had the Lesser Whitethroat in the hand I thought I would check the wing formula to make sure it was just of the European sub-species.....well you never know!


Lesser Whitethroat
The wing formula was spot on for European Lesser Whitethroat Sylvia curruca curruca with the second primary being shorter than the fifth but just longer than the sixth.

Wing of Lesser Whitethroat 

The bulk of our catch was made up of Reed and Sedge Warblers again but Blackcaps were't that far behind. We also caught another 18 Grasshopper Warblers, so 28 in two sessions, which is more like it. Good numbers of Whitethroats were also ringed, two of which were adults and one of those a control.

Adult Whitethroat

The bright orange iris and extent of pure white in the tail feathers were dead give aways for the age, as were the retained adult secondaries in both birds.

Tail of adult Common Whitethroat

The remainder of the catch was made up of Willow Warblers, notably four of which were adults, Chiffchaffs, Cetti's Warblers, Goldcrests, Garden Warblers, Long-tailed Tits, Dunnocks and a retrap Song Thrush.

Tuesday, 18 November 2014

Titchfield Haven - End of Year Summary 2014

After what has been a generally successful season at the Haven, we have hung up our bird bags and migrated to other sites. The season ended with a total of 4651 full grown birds, one pulli, and 259 retraps of 44 species, bringing the grand total to 4911. The undoubted highlights were the Pallas' Grasshopper Warbler, the Cuckoo and the Yellow-browed Warbler. Besides the rarity highlights there were also some record catches for our standard fare, namely Robin, Blackcap and Willow Warbler. Other highlights included the first Woodcock for the site, the Wood Warbler and the Pied Flycatcher. Having now entered all the totals into IPMR there have been some slight amendments to the totals, with Willow Warbler slightly down to 268 and Grasshopper Warbler up to 341.

Table of Ringing Totals for 2014 in the autumn ringing area, the numbers
in red represent highest or equal highest totals for the site.

I have previously posted graphs showing species totals between 1998 and 2014, with trend lines to illustrate how the numbers have increased or declined over that period. For this post I thought I would show how similar species have fared over that same period, so below are comparisons for Whitethroat verses Lesser Whitethroat, Chiffchaff verses Willow Warbler, Blackcap verses Garden Warbler and Reed Warbler verses Sedge Warbler.

Comparison of ringing totals for Whitethroat and Lesser Whitethroat
Comparison of ringing totals for Chiffchaff and Willow Warbler
Comparison of ringing totals for Blackcap and Garden Warbler
Comparison of ringing totals for Reed Warbler and Sedge Warbler

It is interesting to see how the numbers of the different species have varied over the period, and how some species are just that much rarer than others. The most obvious being Common Whitethroat and Lesser Whitethroat and Blackcap and Garden Warbler. It is also interesting to note how the peaks and troughs for each species are mirrored in many cases, with fluctuations in numbers being more pronounced in species with the highest totals.

Our ringing studies will be continuing over the winter, with visits Manor Farm Country Park, Farlington Marshes and Walpole Park all planned, and from there we will see where things take us.

Saturday, 23 August 2014

Titchfield Haven Ringing Update - 23rd August

There is no doubt what the headline species, in terms of numbers has been so far this year, and that is Willow Warbler. We have continued to catch good numbers this week, with another 37 added which brings the total this year to 222. This is already by far the best annual total for the site ever, which surely must indicate a good breeding season for the species.

Juvenile Willow Warbler - one of 19 caught today

Grasshopper Warbler numbers have also started to build this week with 69 new birds added. The total of 31 birds ringed on 23rd included six adults, which were the first of the year. Adult and juvenile Grasshopper Warblers undergo a partial post juvenile or post nuptial moult. In juvenile birds this is not really obvious as all the feathers are fresh, but in adults it results in a mixture of new, fresh feathers and very tatty, worn feathers. There seems to be no strategy as to what feathers are replaced, as throughout the body, head, wing and tail feathers, random feathers can be replaced. The Images below illustrate this.

Adult Grasshopper Warbler crown, note mixture of new (fresh) and old (worn) feathers
Very worn wing feathers of the adult Grasshopper Warbler
Very worn tail feathers of adult Grasshopper Warbler

Of the other key warbler species, Sedge Warbler numbers are on a par with the record numbers of 2011 and 2013, and Reed Warbler numbers are the highest of the last five years. Garden Warbler numbers are also on a par with the record year of 2011 and Blackcap numbers are significantly higher than at this point in any of the last five years. Chiffchaff and Whitethroat are also high and are the second highest totals in the last five years for both species. Cetti's Warbler numbers are also the highest of the last five years, although the numbers have slowed in recent days as the breeding birds have moved away from the ringing area and into the reed beds.

Table summarising key species total up to 23rd August in the last five years
Graph illustrating key species totals over the last five years.

Other notable species ringed this week were the second Lesser Whitethroat and Treecreeper of the year. Both species are only ever trapped in small numbers at The Haven.

Juvenile Lesser Whitethroat - the second of the year
Treecreeper - the second of the year

We had ringed over 220 birds by the end of the session 23rd August. Sedge Warbler (still no Aquatics) was the most numerous species with 69 birds ringed, followed by Reed Warbler (46), Blackcap (35) and Grasshopper Warbler (31).
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