Great and Cory’s Shearwaters – Porthgwarra / Western Approaches, 14^th / 15^th August 1993

Something a tad different; two for the price of one, as, predictably, I have frequently seen these species in conjunction, ever since I finally unlocked the mystery of 'large shearwaters during a late summer trip to Cornwall in late summer 1993, but also subsequently. But more of that later. First, back to 1993.

Months before this tick, my birding mate Paul Pugh and I had committed to going on a Scillonian Pelagic in 1993. This was scheduled for Sunday the 15th August, and so we had driven to Cornwall on Friday the 13th August, having seen U2 at Wembley on the night of Thursday the 12th August. Glorious!

As the pelagic was on the Sunday we had time to do things en route and once in western Cornwall. For example, we visited both the Thorburn Museum in Liskeard and Porthgwarra on the Friday, although the first was more successful than the second. However, doing a sea-watch from Porthgwarra in mid-August, immediately prior to a Scillonian Pelagic, still felt like the right thing to do.

So, having had a good night in the Dock Inn in Penzance where we were staying, we tried again the next day. This time our sea-watch at Porthgwarra had one subtle difference....... it was successful!!

Despite the negative signs (on initial appearances it was even calmer than the previous night and those present had tales of very limited early morning sightings as Paul and I arrived), we scored in a big way in the 2.5 hours we were there. Having been told that there was no real point getting there too early, we didn’t. We opted for a 07.00 for 07.30 breakfast and so finally arrived at gone 08.00. As we arrived at the time-honoured sea-watching auditorium we were greeted by many birders and wonderful conditions.

A good early sign, despite the limited news, was a Basking Shark idly feeding at the base of the cliffs, plus leaping shoals of squid(?).

The whole scene, but the shark in particular, was magnificent. Pelagic bird species were apparently few, with a few Manx Shearwater (tantalising with the possibility of accompanying Mediterranean, or as we now say, Balearic, no, make that Mediterranean again!) passing westwards at the range of the Runnels Stone Buoy. Then suddenly, unexpectedly, a Great Shearwater (and then two Cory’s Shearwaters for good measure) – at the same sort of range – went by.

The Great Shearwater was sufficiently close to get the cap and the under-wing pattern – all very impressive after being such a mystery for so long.

But strangely, due to the dread of 16 hours at sea the following day there was the feeling of slight frustration at the perversity of birding.... .

More was the anticipation for the following day. Indeed, expectations were fulfilled, and more. The shearwaters provided an encore in a big way during the Scillonian Pelagic out into the Western Approaches.

Paul and I were up at 04.15 for our sea-faring birding. We strolled across to the harbour from the Dock Inn to join the queue. We boarded after a short wait. As we tried to find a suitable place to base ourselves we spotted others, including Bernie Beck, cambering up onto the superstructure near the funnel, so we did the same, joining him and several other notorieties.

Fortunately, given my unease on the high seas, it was flat clam as we headed off out past Scilly in search of fishing boats.

An early Cory’s Shearwater did a close fly-past, and proved to us what a good vantage point we had.

Eventually we found fishing boats, and settled into a pattern of closing in, checking out the accompanying flock of birds, chumming as necessary, and then circling, before moving off to find the next boats.

This was very productive, Great Skua, Sabine’s Gull, Manx Shearwater, Cory’s Shearwater, Storm Petrel, Kittiwake, etc., were all seen. But no Great Shearwater! Was yesterday’s bird going to be it?

No. Arguably the best bird was a Great Shearwater, which, after we turned to go back, appeared, as if from nowhere, and swept straight towards our starboard bows and then memorably banked as it was alongside, flashing its under-wing in an apparent piece Of supreme bravado.

The Great Shearwaters we saw were notable in terms of their size (a large shearwater, approaching a large gull in size), with a less than languid flight action involving a few stiff, quick flaps before a long glides..... . The plumage involved, basically, dark brown upper-parts and white under-parts. The upper-wings were progressively darker towards the tips, and the under-wings had a pattern of dark markings, particularly on the inner wing. They had a white collar / dark cap effect and a black-billed.

Having seen (poorly) two Cory’s Shearwater passing quickly westwards of Porthgwarra (quickly being the operative word – they moved extremely fast when they wanted to) I wanted better views. As we sailed westwards off Porthgwarra at the start of the Scillonian Pelagic the following day almost the first bird we saw as the day dawned was a Cory’s Shearwater, boding well. Good views were obtained, and others were seen later. However, as a finale, so as not to be outdone by the Great Shearwater perhaps, as we returned to Cornish waters several more were seen in the evening light.

The Cory's Shearwaters we saw were similarly notable in terms of their size (a large shearwater, approaching a large gull in size), with a languid flight action involving a few shallow flaps before a long glides on slightly bowed wings. The plumage involved, basically, grey-brown upper-parts and white under-parts. The upper-wings were progressively darker towards the tips, and the under-wings had a dark surround, particularly on the trailing edge. They were pale-headed and yellow-billed.

Subsequently, for many years, large shearwaters retreated from my focus unless I visited the Scillies in autumn, and sea-watched from Horse Point on St Agnes or from the Scillonian in the 2010s.

However, meanwhile, the world was changing  rapidly, and on a few occasions I managed to see lone Cory's Shearwaters in the Firth of Forth in the 2010s and 2020s. Indeed, one transformed into a Scopoli's Shearwater almost before my eyes in August 2020, immediately before I moved back into the centre of South Queensferry; had I moved a few days earlier I would literally have been able to see this bird from the garden!!!!

Then, on the 17th September 2022 I was fortunate enough to be one of a handful of birders on the Isle of May who managed to see both Cory's and Great Shearwater flying north past the Low Light in a fantastically memorable couple of hours. One of those very centrally involved, Alan Lauder,  had grown up sea-watching from St Abbs Head and never in his wildest dreams had he imagined seeing a large shearwater in the North Sea, let alone both species.

Additionally, in September / October 2023, 2024 and 2025 Ken Shaw, Andy Williams and I had weeks on Lewis and in the second and third years put in a good amount of time sea-watching at the Butt of Lewis. Certainly on one occasion in 2024 this produced a steady passage of Great Shearwaters, such that we were each calling birds as they went through.

And lastly, in October 2024, during a week staying of St Mary's and birding the Scillies, Chris Pendlebury and made the very good decision to take the last Scilly Pelagics trip out to Bishop's Rock of the year on the 22nd, in the hope that the Red-footed Booby would still be there. It was, but just as memorable was the feeding frenzy of shearwater, including loads of both Cory's and Great, no longer mythic but always epic. 

No photographs of either of the two shearwaters involved are available, I'm afraid. However, this photograph was taken from Porthgwarra on Friday the 13th August, and shows the Scillonian III plying her was back to Penzance two days before we boarded her for our very successful Scillonian Pelagic.