Posted by Brydon Thomason on Thursday 14th April 2011 | Sea Mammals in Shetland

Although behaviourally there is similarity between Sperm and Humpback raising their tail flukes, in appearance they are quite different especially as Sperm lack the prominent white undersides. Their massive bulbous head can measure up to 30% of their overall body length.

On the 7^th of April I received a text from David John Anderson, a friend of mine working on board the Skerries ferry, MV Filla. His text described very briefly a large whale which he believed to be a Humpback which they had seen and photographed from the ferry mid-way between the Mull of Eswick and the North mouth of Lerwick Harbour. Needless to say on reading the message I was quick to call him back. His description firstly of the whale lying motionless at the surface quickly urged me to mention Sperm Whale’s characteristic ‘logging’ on the surface. Their views however were leading them much more along the trail of a Humpback and they seemed fairly convinced that that was what it was.

Incredibly Sperm whales have been known to dive to depths of 1000m or more and stay down for over an hour! They have the largest brain of any animal.

Later that evening however DJA downloaded his images and with a brief search of the internet compared them to Sperm and Humpback and tentatively re-identified the whale from his own images. Opening up the images he sent I was green with envy as he was indeed spot on and I have yet to see Sperm Whale in Shetland! As far as records of the species go here they are very much a rare sight inshore. The most recent report inshore off Shetland was back in 2007 when a pod of up to 20 whales were believed to be Sperm whales and before that there were at least 12 off of Noss in 2005. ‘None stranding’ reports or sightings such as these usually refer to pods on their migration. Further offshore they can be seen much more regularly. This sighting most probably involved a male on his Northward migration. The whale was estimated by the ferry crew to be in the region of 40-50 foot in length!

A big thanks and well done to DJA for the haste in getting the news to me and for the use of his images.

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Posted by Brydon Thomason on Wednesday 13th April 2011 | Sea Mammals in Shetland

With several sightings of Killer Whales already this spring (leading to some confirmed identification matches) it is indeed very appropriate to bring the work of the North Atlantic Killer Whale ID project to people’s attention again. The continued support both locally within Shetland and indeed from visitors has been key to the success of the project to date. This summer we encourage and invite anyone fortunate enough to see or photograph Killer Whales in Shetland to please contact us to report the sighting. Although co-founder of the NAKID project Dr Andy Foote will be returning to Shetland this summer, he will not actually arrive until the 3rd of July when he will be joining us on our North Isles Nature Cruise with Simon King. Once again we are delighted to have Andy on board as sea mammal specialist and he is looking forward to sharing information, aims and indeed the progress of the Killer Whale ID project to date.

“In the absence of any of the research team for the first part of the 2011 spring/summer we are asking for reports and information on Killer Whale sightings to please be called or texted in to Brydon on 07786982773. Brydon has played an integral role in the project from the start and has been helping us both when we are there or away, so it seems like a natural transition and the best way for us to keep information and interest going within the isles. We also hope to make the ID catalogue available to the public as a free download at some point this summer.” Dr Andy Foote, NAKID

Dr Volker Deeke (a research fellow at the Sea Mammal Research Unit studying the behaviour of killer whales in Scottish waters) also hopes to be rejoining the Shetland Nature team this summer.

For an update of 2010 Killer Whale sightings visit www.shetlandnature.net/2010/12/02/killer-whale-sightings-in-shetland-2010/

And for more information on the NAKID visit www.northatlantickillerwhales.com

If you would like to find out about where and when in Shetland Killer Whales are seen this is also a good opportunity for wildlife enthusiasts throughout the Isles and indeed visitors to Shetland to consider following Shetland Nature on Twitter and Facebook. We have been using to filter news and reports of Killer Whale sightings as and when they happen, leading to more and more people enjoying encounters. Especially given our working relationship with the research team and acting as their point of contact for sightings and reports in Shetland this offers the most informed and up to date insight into Killer Whales around Shetland.

You can can follow our Twitter stream at twitter.com/shetlandnature

If you are a Facebook user you can join our page at www.facebook.com/shetlandnature

It’s not only Killer Whale sightings that you will be able to follow in this way but also all other wild and wonderful sightings, such as other exciting sea mammals and rare birds, which come via the local birding grapevine or straight from the scene as it happens!

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Posted by Brydon Thomason on Wednesday 6th April 2011 | Sea Mammals in Shetland

Only a year since Shetland’s last visit from this majestic Arctic sea mammal (read our news post on last year’s Bearded Seal), this beautiful beast was discovered in Baltasound on Unst. It was only minutes after finishing our dinner that a rather excited Desley Ritch appeared at our door and proceeded to thrust her camera’s LCD screen towards my face, in a sort of ‘see what I’ve seen’ sort of way. “Is this something different?” She asked in a cheerfully sarcastic tone, “Blimey- its a Bearded Seal!” I exclaimed, as she went on to say that they, her and her brother Christopher (who had found it earlier in the afternoon) were quite sure that that’s what it was.

Desley had hardly begun explaining where it was and my jacket was on and boots were being laced up. Thankfully it was just a few minutes along the road right slap bang in the middle of a reasonably busy little marina where it lay hauled out on the slip way. Whilst my wife Vaila got ready to join me I quickly rang the news around – desperate to get down there before the light went all together, it was already after six!

Thankfully, we managed to get news around every one locally and within minutes we were all stood barely a few meters away from a Bearded Seal, all the way from the Arctic! Unfortunately the seal proved not to be as long a stayer as last year’s individual, which was only the 12th record for Shetland and only lingered for another two days. A voicemail that eventually found its way through to my mobile later that evening was from Christopher earlier in the afternoon with the news – while I was out on a boat photographing a King Eider, yip that’s Shetland for you, a naturalist’s paradise!

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Posted by Brydon Thomason on Monday 7th March 2011 | Sea Mammals in Shetland

How many times do you find yourself being told “Oh, you should have seen it…” or “Where were you? It was incredible!” Well this time I heard them all and more! Pilot Whales or Caain Whales (as they are known in Shetland) have become very rare in Shetland over the past couple of decades or more, so a pod of over twenty in Lerwick harbour caused quite a lot of excitement to say the least. Not only were they right in the harbour, just off Lerwick’s main pier, but it was also a Saturday so they could be enjoyed by even more lucky observers.

Amongst the assembled crowds were many friends, including a couple of our tour leaders, Rory Tallack and Helen Moncrieff and our web developer David Gifford (few of whom were subtle about how much I had missed out!). So where was I? About as far away as I could have been, on Unst with my mobile phone out of signal (one of the few downsides to living in the north isles)! The first I was aware of their presence was well after 09:00hrs when my phone buzzed to life with texts and voicemails, all of which were about the whales. The first of them, at 07:25, was from the crew of the Bressay, informing me of a pod of at least 20 whales or dolphins in the harbour (it’s calls like these that are crucial not only so sea mammals are hopefully identified and recorded but also so that as many people as possible get to enjoy such fabulous world-class encounters). Later another to say they were possibly Caain whales or maybe Risso’s dolphins. Amongst the other messages was one from Jonathan Wills (in the Czech Republic!) of Seabirds-and-Seals with news of the sighting. It is reassuring how quickly news gets around on sightings like these.

But Pilots were not the only whales to put in an appearance that day. Amongst the messages was a voicemail from a ferry crew on Yell Sound with news of a pod of Killer Whales! Perhaps slightly more expected, this sighting was of a pod of five and came only days after I had prompted crew members to keep their eyes peeled as we were just about bang on time for the first sighting of the season. It is very likely (although with no photos we can’t be sure) that this pod will be the same pod of five that has arrived during this early period in the spring for the last three years. Prior to last year, it comprised only four animals but arrived back with a fairly newly born calf last year. Slowly a pattern of sightings is starting to appear and especially with thanks to the work of Andy Foote and Volker Deeke of the North Atlantic Killer Whale ID project.

Late winter and early spring sea mammal sightings are in actual fact not as uncommon as you might think. Remarkably, we identified Humpback Whales on almost the same date in February exactly the same location (Bluemull Sound) two winters running, and then on the third (2010) they appeared in December. Perhaps these sightings are of the same individuals following the same route as they migrated north. All of these sightings were thanks to our local contacts being quick off the mark and calling us with their sightings, keep the calls coming!

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Posted by Brydon Thomason on Thursday 2nd December 2010 | Sea Mammals in Shetland

By Andy Foote, Brydon Thomason and Suzanne Beck

Even as this year draws to a close there have been killer whale sightings around Shetland. So it seems like a good time to look back at the comings and goings of our killer whales during 2010.

The first whales showed up in late March (23rd) in Yell Sound, which is consistent with the past few years. We got a chance to photograph them from the Yell Sound ferry, but the sun was working against us and the images were backlit and we couldn’t really positively ID any of the whales. One of the female-sized fin silhouettes however had two distinctive notches in the trailing edge, which looked very much like the female with ID number 12. But other individuals had silhouettes that did not match any of the fins in our photo-id catalogue, and so it seems like we had some new whales!

The new individuals appeared to stick around for a couple of weeks as the fin shapes match with those seen hunting in Scalloway harbour only days later on the 28th March and with 2 males photographed in Yell Sound on the 8th April.

May was a quiet month around Shetland, and all the action was further south. The group of four (27, 34, 72 & 73) that are regularly seen around Shetland showed up in Scapa Flow (6th May) and have a new calf! It appears as though 27 is it’s mum as it stayed closest to her in all the photos we were sent. The photo (left) of this pod was taken on Bluemull Sound on 15/03/08.

We got to follow this groups travels through a series of great photos provided by the public. On the 13th May they were seen off Durness in Sutherland, but they headed east again and were photographed on the 20th off Whaligoe steps, Ulbster, Caithness, they didn’t show up again until 23rd August when they were photographed off the Faeroes feeding on eiders and doing some hunting training with the youngsters, and even hit the headlines by making it on to the Faeroese evening news.

12 and her group were also sighted regularly in May, being photographed between Shrapinsay and Kirkwall on the 9th May, and then Duncansby Head, Caithness on 16th, they were back up to Orkney where they took a marine mammal in Eynhallow Sound on the 25th May, before heading South again, being seen back off Caithness on the 28th May, they then headed west and were last positively identified off St Kilda on 12th June. They may have also paid a fleeting visit to Shetland as a group that looked like them were photographed on 8th July off Bressay, but it was choppy weather and the photos weren’t clear enough to be sure.

Larger groups of killer whales were also getting seen feeding on herring offshore and about 25 miles east of Shetland during May. Photos we received were all of individuals not previously catalogued.

June was pretty quiet too, until on the 23rd a group of 5 showed up in Yell Sound and took either a seal or porpoise just off the ferry. This was the start of an unprecedented run of sightings from the Yell Sound ferry, with almost daily sightings for a month. Photos that we have received or collected ourselves between 23rd June and 24 July showed that most of these sightings were of the same group of 5, which were positively IDed on the 23rd June, 7th, 12th, 15th and 18th July. The group had not previously catalogued and it seems highly likely that they are newcomers to Shetland.

They weren’t the only group seen around Shetland at this time, as noted above the group on Bressay were definitely not the same group, and our old friend Bigga (ID number 14) was seen on his own off Gutcher on 10 July and again on two occasions over the following fortnight on Yell Sound.

Further South again photographs came in of the female with ID number 15 group who we last saw in 2009 off Bluemull Sound, once off the Moray Firth on the 29th June and then off Orkney on the 20th July.

So this year due to the amazing public contribution of photos, we’ve been able to track some pods as they have moved over quite a considerable distance, we’ve been able to monitor the birth of new calves, and we’ve seen what look like 2 sets of newcomers to the Northern Isles, suggesting that killer whale sightings in this area may be on the increase.

A massive thank you to everyone who contributed to this year’s efforts, the support continues to grow each summer!

Read more about the ID project at www.northatlantickillerwhales.com

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Posted by Brydon Thomason on Monday 16th August 2010 | Sea Mammals in Shetland

Once again, it has been a good season for encountering these fascinating dolphins. We enjoyed several encounters through out the season, one of which in early May proved to be very interesting and indeed informative.

After photographing a pod on Bluemul Sound whilst editing images I came across an individual with a very distinct scar on its left side, just bellow the dorsal. I immediately thought that this scar was familiar to me and that I had seen it on a dolphin before but couldn’t quite relate to when or where I had seen it on another animal.

It was not until some weeks later, I came across images on my laptop taken by Dr Volker Deeke (a member of the Shetland Nature team) off East Yell last summer. In his sequence he had photographed this same individual, clearly identifying it as the same animal as I had encountered.

In many ways it was no surprise to confirm a positive ID and a match (although this is the first time photo ID’s have been confirmed in Shetland), as many of us already presumed that sightings in Shetland each summer probably relate to the same pods (as is the case with returning Killer whale pods) and that these pods are probably quite faithful to particular stretches of water each year. Risso’s certainly show a preference for the waters around the North east of Shetland especially the waters around Unst, Yell, Fetlar, Skerries and Whalsay. Sightings are however recorded from other locations pretty much annually.

Jane Evans and a team of researchers from the Scottish Oceans Institute began some research on these somewhat enigmatic sea mammals this summer. Mainly working in the waters off Unst, Yell, Fetlar and Skerries more often than not they would locate the pods on a daily basis in the same areas, often using hydrophones both to locate and record the enthralling vocalisations they use to communicate under water. We look forward to their return in 2011 and giving them our continued support.

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Posted by Brydon Thomason on Friday 7th May 2010 | Birding in Shetland, News, Sea Mammals in Shetland

What a fantastic day! After an extremely successful (and very enjoyable) three days of Otter Photography – 23 Otters on three Islands with a Dutch client (Wim Konninghurst) we decided to spend a day on Unst.

The day got off to a fantastic start with a pod of over 20 Risso’s Dolphins off the early morning ferry. The dolphins were spread widely across Bluemull Sound between Yell and Fetlar. This stretch of water is one of the best in the Isles for seeing these burly dolphins.

Although you cant quite make out much detail from my cropped record shots, Risso’s are characteristically covered in scars. With blunt- bow headed appearance and these often rather prominent markings, Risso’s can look quite coarse and rather rough looking and with this be very distinct, given decent views. They are often quite deep water predators, with squid being a favourite food source and cause of much of the scarring! Feeding dives can often last up to an impressive 15-20 minutes and Squid in the stomach contents of Risso’s have been found to measure an amazing 12 feet! Lets hope we manage to locate them during our Seamamal Search on the 29th of May!

Barely an hour later, on arrival to Burrafirth Shore Station at the North end of Unst (where the Scottish Natural Heritage reserve’s visitor centre is based) we found a Hoopoe, literally seconds after getting out of the car and kitted up! Quite increadable given that fellow members of the ‘Shetland Nature’ team Garry Bell and Rob Fray had been called out to identify a bird the previous day – which turned out to be a Hoopoe! Which incidentally is the one photographed, by Gary.

But the day was not yet done. Just as we were about to make our way down off the reserve, whilst sitting gazing out over the Atlantic Ocean, simply awe struck by the ‘seabird city’, my good mate Robbie Brooks rang to inform me he had just had a Sea Eagle heading North over his house. Trying not to expect too much more out of what had already been an incredible outing, I thought to myself ‘that could very probably head our way…’

I then also passed on the exciting news by calling the reserve warden Alister Wilson, who I knew was out on the reserve, not too far away.

Sure enough about an hour later we were alerted to the birds presence by the hundreds of Great Skuas which took to the air across the reserve as the bird drifted low over the moorland. A truly awesome sight indeed watching how this fantastic bird of prey simply dwarfed the swarming Skuas. Not wanting Alister to miss out I called him again literally minutes later it soared over his head, when he got this cracking shot- note the wing tag.

The bird was an immature which was first seen a few weeks earlier on Fair Isle and again by good friend and Shetland nature tour leader Roger Riddington soon after. It is one from a release program on the east coast of Scotland. This bird had a green wing tag on with a No.8 on and is known to be a one year old male. We later enjoyed yet another encounter with the bird during an evening visit to the reserve cliff tops.

Oh if only these masterful raptors would return to the Isles to breed some day…

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Posted by Brydon Thomason on Saturday 17th April 2010 | Sea Mammals in Shetland

Spring cetacean specials indeed! April really is shaping up to be quite a month for sea-mammals and not just the exhilarating Orca! After my first encounter on the 23rd of March I was favoured by fortune not just once but twice in four days with close encounters with Killer whales.

Once again, Yell Sound (the channel between Shetland Mainland and the Island of Yell) was the place to be. Two of the bulls, which I recognised from the sighting in March made their way rather effortlessly North with the ebe tide. This really was something I thought to myself, two sightings in just a couple of weeks and so early in spring. It is usually well into May/June before Orca sightings begin to ‘heat up’. Then only four days later, on the 12th, the same two bulls accompanied with eight or more whales (the same pod from the March sighting) traveled South through Yell Sound. What was even more exciting is that at this same time there was an additional three whales heading in the same direction across on the other side of the sound, which I would assume to part of the same ‘super pod’.

What was probably the same pod of 10 or more, was seen moving South off Sumburgh Head on the 15th- the circumnavigation of our Isles by these enthrawling sea-mammals continues…

As if the Killer whale encounter had not been enough excitement, we were also enjoyed a pod of at least six Risso’s dolphin on the 9th (yes- in between the Orca encounters!).

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