RSPB Scotland Research Assistant, Davide Scridel, is out searching for an elusive bird in the Outer Hebrides. Find out more about his experiences and check out his fantastic photos below!
Island living: searching for twite in the Hebrides
The subject of the 2013 Statutory Conservation Agency/RSPB Annual Breeding Bird Scheme is the twite! The first survey, in 1999, produced a population estimate of 10,000 pairs with the majority of the breeding birds located in Scotland, then England and only a few pairs remaining in Wales. Due to the severe decline that this species experienced since the 1800s, twite are of the highest conservation concern in the UK. It is therefore vital we to reassess its population trends fourteen years after the previous national survey.
Twite perched on rock by Davide Scridel
Twite breed on unenclosed moorlands, hills coast and islands especially near farmland, with nests occurring on heather moor, sea cliffs, in gorse and, more rarely, in conifer plantation. They primarily feed on seeds found in grassland and cultivated habitats such as pasture, meadows and young fallows.
In Scotland twite breed most commonly in the Western and Northern Isles, in the Inner Hebrides and along the coast of West & North Scotland where these habitats are particularly widespread.
I feel very privileged because I have been assigned to survey this understudied species within a series of randomly selected 1x1 km2 in the Outer Hebrides (Uist, Harris & Lewis), some of of my all-time favourite places. These islands are extremely beautiful and are the stronghold for breeding twite in the UK. Such preferences can be partially explained by the fact that the islands offer coastal and moorland habitats as well as the unique, small-scale farming practice called crofting.
Here fields are low-intensively managed to produce cereals or foraging grasses for livestock and the interaction of these human activities and the natural occurrence of a unique calcareous landmark Machair, formed by windblown shell sand, provide enough fertility to support cereal-based livestock production.
This is particularly true in the island of Uist, where I am based. Here cereals are grown using limited pesticides and low fertilizers with fields left fallow traditionally on a biannual basis, allowing very rare plants but also ruderal plants, such as dandelion and common sorrel, to emerge. These are the twite’s absolute favourites and part of our task here is to record the presence of this species also in relation to the amount of flowers we can see in the surroundings.
Golden plover on freshly ploughed machair by Davide Scridel
Small scale-low intensive agriculture practises are very rare nowadays and only persist in isolated areas but they are truly a heaven for orchids, invertebrates and for rare and declining farmland birds such as corncrake and corn buntings. Twite are much more than just “brown” birds. They are true indicators for changes in the way we live and how our needs affect our landscape. It is therefore very important to assess how the twite population is responding to human and non-human changes fourteen years after the previous survey.
It is now a week since I took the ferry from Uig (Skye) to reach North Uist. The journey was remarkable: surreal landscapes and plenty of wildlife, with highlights such as golden and white-tailed eagle and hundreds of razorbills floating around a motionless sea. It was so unbelievably still that even the boat crew were capturing it with their cameras while approaching the Outer Hebrides - such rare moment for this part of the world.
Lochmaddy at dusk by Davide Scridel
I spent the following two days meeting local RSPB colleagues working on the site as well as partners SNH and MACHAIR LIFE+. The latter organisation is of particular interest to me as they are truly dedicated people, with the focus of increasing awareness and protection for this rare habitat full of biodiversity and very important not only for twite but also for rare invertebrates such as the Great yellow bumblebee, confined to a few spots in the whole of Britain.
The first day of the survey involved visiting a 1x1 km2 located in South Uist. We didn’t see any twite but spotted stonechats, ravens, kestrel, whimbrel, wheatear and plenty of meadow pipits amongst others. An excellent introduction to the Western Island wildlife! But things got even more exciting towards the last transect when I noticed in the far distance a female hen harrier emerging from a spot in thick heather while whistling piih-eh to an approaching food delivering male. That made my day...and it was only the first one I’ve seen in the field. After seeing the female returning to the same spot I was then sure I had found a nest and decided to walk off immediately to avoid potential disturbance to the breeding pair.
Stonechat by Davide Scridel
Despite such excitement, I was quite disappointed to have not seen any twite. The weather forecast for the following day was typically Hebridean- rain and winds up to 40 mph which suggested a boring day indoors. Suddenly, those strong winds that brought rain in the morning also cleared away the cloudy sky and a splendid, but still windy afternoon, allowed a visit to a second square.
Similar to the first one, this square incorporated a combination of moorland/coastal habitat and after a few transects and point counts I detected the unmistakable “twit” and a later rambling song or “chortle”. Five TWITE amongst two pied wagtail and a few meadow pipits were confidently feeding on a white sandy beach energetically seeking for seeds amongst the washed up seaweed.
Twite searching for seed by Davide Scridel
No rings on legs but 4 out of the5 birds showed clear signs of pairing. The “chortle” is in fact a reliable indicator of breeding activity and my excitement did not stop when two birds decided to leave the feeding spot and fly towards the grass/moor mosaic cliff less than 100m away from the beach.
One of the birds remained perched on a stone, guarding the mate disappearing into a small crevice. I decided to wait and visit that crevice when both birds went back to feed on the shore. There was a nest there, carefully lined with grass and some sheep’s wool at the bottom of the cup. It was my first ever twite nest containing three light blue eggs with tiny black marks. I left the site quietly and checked for the safe return of the incubating female. It was a confirmed breeding site for twite and a very exciting day for me!
Male twite by Davide Scridel
Brand new blog from Chris Knowles, RSPB Scotland Nature Counts Trainee Ecologist.
Taking the slow road: surveying fungi on the banks of Loch Lomond
This end of a frosty spring is about as far from being mushroom season as you can get, and yet that’s what I had high hopes of finding on one of my first outings as a ‘Nature counts trainee ecologist’.
With the recent weather in mind, I set out on a surprisingly dry and not-particularly-freezing kind of morning to survey woodlands at the RSPB Loch Lomond reserve.
1. Ring Wood, RSPB Loch Lomond
As I took my first few steps into Ring Wood I glanced around at the dominating beech and birch, cast a hopeful eye over the copious standing and fallen dead wood and then spent the next 20 minutes in pretty much the same spot. I had stepped into a wonderland of diversity as each trunk, log and fallen branch revealed more of the toughest fungi left hanging on since last autumn like the Birch Polypore (also known as the Razorstrop fungus due to it being used in the past as a tool sharpener) and some of the woody perennial fungi like the Hoof Fungus (also known as the Tinderbracket due to it being used to carry tinder for firelighting still to this day).
2. Hoof fungus (Fomes fomentarius)
In fact due to the large number of species found, by noon I had barely moved 20 metres from where I started. So although it was with some reluctance that I had to drag my eyes from the ground in my search for fungi, I was rewarded over lunch by a sight in the skies. As I sat on a bank of the loch munching a sandwich, an osprey with similar thoughts in mind repeatedly swooped down over the water catching its own lunch – it was wonderful to watch, and something I had never observed before (neither an osprey, nor an osprey’s lunch).
Soon enough it was time to get my head out of the clouds, and back into the woods for more fungi; no difficult task on a site like this. I was particularly impressed with how many species had colonised the same host plant together... with the best exhibiting no less than four visibly fruiting in close proximity on the same dead tree.
I’ll be returning to the same woods for another survey this autumn, but next time I think I’ll be bringing the kids along for a fungal lesson in sharing.
Introducing a new series of blogs from RSPB Scotland Conservation Scientists. First up is Emily Scragg, Senior Research Assistant with the Seabird Tracking And Research team on Colonsay.
Greetings from the STAR (Seabird Tracking And Research) team on Colonsay!
It is our fourth year here on the island (and my first) carrying out seabird tracking work with the previous three years tracking carried out as part of the Future of the Atlantic Marine Environment (FAME) project. This research aims to find out where UK seabirds are foraging in order to help inform the Marine Protected Area (MPA) designation process. Previous years tracking data is freely available to the public, policy makers and renewables companies at webgis.spea.pt/FAME. We encourage everyone to explore our ground-breaking results for themselves.
We are one of four STAR teams collecting data this year, with the others based on Orkney, Fair Isle and Rathlin (in addition to collaborating with people on the Isle of May, Skomer and Puffin Island).
Tessa and I are based on Colonsay for the next three months, a small island in the Southern Hebrides which is home to around 100 people, a general store, a bookshop and a brewery...what more could you want!? The landscape is comprised of a wide range of habitats from heather moorland to dunes, machair, sandy beaches and sea cliffs, and consequently has exceptionally rich biodiversity. Along with Islay it is the only place you can find breeding chough in Scotland.
We arrived here two weeks ago and have spent the time preparing for the field season ahead – this has involved a wide variety of tasks from re-acquainting ourselves with the locals (and the local cakes!) to cleaning and sorting equipment, reccing sites, and preparing the GPS tags we use on the birds.
The tags take quite a bit of sorting before they are ready: each must be charged and discharged at least twice, and then run through a series of tests to check that it is in full working order. We have over 150 tags so this is no mean feat! Fortunately we've been able to intersperse this with trips to the cliffs to re-familiarise ourselves with the sites and find out what the birds are up to – the short answer has so far been 'not much'. Shags are the first species we tag on Colonsay but we have to wait until they are settled on their nests incubating, and this year the onset of breeding for the shags appears to have been delayed. This could be due to the high winds and waves we've been experiencing. When breeding, When breeding, shags forage in shallower waters close to the colony and can find it difficult to feed when high winds cause turbulent waters.
On Monday we visited the local school to talk to them about our project and to try out the 'FAME game'. This involves sending the children to 'forage' for Sandeel fact cards whilst carrying one of the tags. We can then download the tracks from the tags and show them where they've been. With a class size of 3 (2 were off sick) it was a little intense but I think all of them had fun and learnt something about us and about the birds we study.
Aside from preparing for the field season we have been having fun at the island's Spring Festival. There have been a lot of talks and workshops on offer and we have been taking advantage of our relative free time to explore these fully! Spring is well underway on the island – we saw our first Cuckoo of the year last week and a Corncrake was heard yesterday in one of the fields near where we live. There are lambs gambolling everywhere you look and the Primroses are in bloom, as SpringWatch would have it “Spring has sprung”!
Our other teams have also been working hard: Team Rathlin has already tagged 3 birds on Great Saltee, team Orkney has been preparing for their first off-island trip and team Fair Isle have been playing it easy as their equipment only arrived on the ferry a few days ago! The advantage (or disadvantage) of once-a-week post. We will all be keeping you updated throughout the season with our progress.
Countdown to Scottish Birdfair! May 11-12 at Hopetoun House near Edinburgh
With a little over 1 week to go before the second annual Scottish Birdfair, it’s all go in the office as we finalise plans for the big weekend.
The award-winning festival* attracted some 5,000 visitors in 2012 and is expected to be even bigger and better this year.
The Scottish Birdfair will host over 100 exhibitors showcasing everything from the very best in optics to outdoor clothing, books, arts & crafts, garden accessories and more.
An exciting programme of expert talks, guided walks, demonstrations and workshops ensures there is something for everyone whether you are new to birdwatching or an old hand.
For those of you who like to take advantage of a full day- Set your alarm clock for a guided Dawn Chorus Walk around the beautiful grounds of Hopetoun House. Enjoy a coffee and the sounds of songbirds greeting the day.
There’s also an opportunity to discover the remarkable birdlife of the Firth of Forth on a special seabird cruise. Experts will point out the diverse range of species found right on Edinburgh’s doorstep from puffins to gannets and terns. You may even spot seals, dolphins and jellyfish!
And it’s all for a good cause! Proceeds from the Scottish Birdfair will go to support our efforts to protect and conserve corncrake, a rare and elusive bird and a real Scottish conservation success story.
There’s also a range of fantastic activities including bushcraft, foraging, cookery demonstrations and a fantastic line up of local folk bands throughout the weekend.
There’s lots for the little ones too from storytelling and puppet shows, to pony rides and arts & crafts. The Scottish Birdfair is a great day out for the whole family.
For more information and to purchase tickets, please visit: http://www.scottishbirdfair.org.uk/
*Scottish Birdfair was named Best Small Festival at the Scottish Event Awards 2012.
Photo by Ed Mackey
RSPB Trainee Ecologist, David Freeman, tells us more about his work at Forsinard Flows.
In search of the Golden Bog Moss
Before arriving at Forsinard I had already decide to try to use some of my spare time constructively by improving my knowledge of the Sphagnum Mosses, commonly known as the Bog Mosses.
When most people think of bog mosses I’m sure the image that springs to mind is of something dank and snot green. While it is true, some species do fit this description, it is far from the whole truth. For example, there is the deep glittering crimson of Sphagnum warnstorfii, Sphagnum caplliifolium can have the colouring of raspberry ripple ice cream and Sphagnum teres has a head of striking ginger, however there is one bog moss in particular that stands out from the crowd, the golden bog moss Sphagnum pulchrum. This is a relatively rare moss in the UK and as well as being distinctively gold in colour it is also remarkably symmetrical in structure. Looking at this moss close up reminds me of 1920’s art deco and geometric shapes.
I decided to dedicate a surprisingly bright and warm March weekend to search for a range of intriguing mosses, all the time keeping an eye out for S.pulchrum. Trekking across an expanse of undulating moorland, it was not long before I came across area peppered with icy lochans. These pools had a surprisingly diverse moss flora and on the edge of one of these pools I spotted S.pulchrum. It was not the distinctive golden sheen of the plant, which first grabbed my attention, but rather the distinctly ordered structure setting it apart from the surrounding vegetation. I was ecstatic to say the least.
This was a fantastic find and certainly one of the highlights of the weekend. I believe my exeprience at Forsinard proves the best way to learn about any plant or animal is to go out and start looking for them. Over those couple of days, utilising the samples I had collected, I was able to make a real improvement on my understanding of the bog mosses. This was just as well as that Monday I was delighted to be offered the position of Trainee Ecologist at RSPB Scotland's HQ, focussing on mosses and liverworts.
Photo by Sharon Pilkington.