Those of you that have been following our work for a number of years now will know about the nocturnal migration work we’ve been carrying out since 2015. At night, throughout the year, when we’re all in bed, many thousands of birds migrate across the night sky, their presence only given away by the calls they make to one another as they move from A to B in the darkness. Now, these movements may only involve short local movements that birds like Barn and Tawny Owls make or it may be long distance movements like waders, thrush’s and terns make. Regardless of the distance covered, many of these birds call at night and its only now that we’re getting our heads around what species do move at night and just how many there are.

Since 2015 we’ve been pretty obsessed with learning about this topic, so have been deploying sound recording equipment at night at sites we think birds will be travelling through. After a nights recording we can then analyse and listen to the recordings to find out what species have been passing over that very night. Interesting recent discoveries have including the discovery that Ortolan Bunting, a rare passage migrant in Dorset is actually a regular night migrant over Dorset sky’s each August and September. Also, each October and November, vast numbers (thousands) of Redwing, Song Thrush, Blackbird and Fieldfare are passing over Poole Old Town during the dead of night. We also record lots of waders, all of which migrate long distances at night, as well as a few geese and tern species too.

Forever wanting to learn new things, we recently approached the National Trust Purbeck team about the possibility of setting up our sound recording equipment at night within the high grounds of Corfe Castle. The reason for this is because we’ve long assumed that ‘the Corfe Gap’ is in fact a migration route in and out of Poole Harbour for many birds as we often see finch, hirundines and pipit migration through there in the autumn. But what goes through there at night?

With kindness and enthusiasm the Purbeck NT team said yes to our hair-brained idea, so this summer and autumn we’ll be carrying out night recording sessions from within Corfe Castle its self….HOW COOL IS THAT!

What have we learnt already?

In prep for the autumn, which is the busiest time for bird migration we’ve recently carried out three tester recording sessions (two in late May, one in early June) and have already discovered something quite interesting. It seems some local water birds are using the Corfe Gap as a short cut to other water bodies close by, with Moorhen, Water Rail and Little Grebe all being logged in our recordings flying over Corfe Castle at night. In one of our May recordings we also logged Dunlin and Knot flying past distantly, suggesting already that some waders are using this route as a short cut to the harbour.

Little Grebe – Call of night migrant through the Corfe Gap 30/05/19 @ 23:10

Water Rail – Call of local bird moving at night – Corfe Castle 09/06/19 @ 23:01

Moorhen – Call of local bird moving at night over Corfe Castle 10/06/19 @ 02:19

Also, its been discovered that the local Tawny Owls have been successful as we’ve been hearing calling juveniles in our recordings. And who can ignore the eerie call of the Barn Owl which seems to be calling frequently around the castle with it’s rasping screech giving it the old nickname The Demon/Devil Bird.

Barn Owl – Call of local bird flying through the Corfe Gap – 31/05/19 @ 23:35

With so much heard already in just our first three recording sessions, its hoped the peaked months (Late July to late October) will turn up some more exciting surprises.

We’d like to thank the Purbeck National Trust Team for their cooperation and willingness to allow this to happen and we look forward to updating you all again soon with more Corfe Castle sounds from the darkness.

We wonder what William the Conqueror what have thought all these noises were?

On a warm, sunny May evening I wondered over to the Puffin boat after a day’s work in the Birds of Poole Harbour HQ. It was nice to see a gathering of likeminded birders all queuing up, waiting to alight the boat.

The trip was the first out of three sold out Puffin cruises, so we did not know what we were going to expect. With six o’clock approaching fast we alighted the boat and sat ready to go. The first few birds were recorded: Cormorant, Great-black Backed Gull, Black-headed Gull, Herring Gull and Oystercatcher. The latter sat on a nest near the quay sea wall.

Then, to my amazement a group nearer the front saw a Bottle-nosed Dolphin just off the quay swimming south. This individual was more than likely the lone individual from Portland who likes moving between Studland and Swanage. His name is ‘Danny’ and has become a local celebrity with his own Facebook page and many eager fans. Unfortunately, I did not see him.

After an introduction by Paul Morton and Mark Constantine as well as health and safety by the skipper we started the cruise. Jake Blade and I, both Engagement Assistants in the BoPH HQ, were spotters for the evening. We started the cruise by heading towards Brownsea Island to view the Dorset Wildlife Trust’s lagoon. Instantly, we saw Sandwich Terns and Common Terns both leaving their breeding grounds to feed out in the harbour as well as two Little Terns who were first picked up on the webcam earlier in the day. Six Avocets were loitering on the mud with a single individual sat on a nest, an iconic Poole Harbour species. Other birds present included the seemingly resident Shelducks, Gadwall, Black-tailed Godwits and Grey Heron as well as a small flock of migrant Dunlin which included a Knot.

Arctic  Skua chasing Common Tern

Our cruise continued, I pointed out multiple Sandwich and Common terns to the public as we headed out of the harbour entrance and into Studland Bay. A migrant Arctic Skua was picked up by Paul as it darted across Poole Bay. It started to chase and harass the local Terns as it gave an amazing display beside the boat.

Just before we left the BOPH boundary, a flock of Guillemots and Razorbills passed distantly and members of the public gained nice views of a Peregrine, two Fulmars, a Gannet, Kittiwake and the local Cormorants around Old Harry’s rock. Paul mentioned how Cormorants are persecuted throughout the United Kingdom and how this may be affecting the local population. Surprisingly, a Little Egret flew high North headed towards Poole Harbour and a flock of House Martins circled the cliff tops near Ballard down.

Kittiwake – Blackers Hole

A very informative chat by Paul and Mark as we headed past Swanage and Durlston about a range of topics including the breeding sea birds. Along this section of the coast we saw large flocks of Guillemots and Razorbills as well as a small population of cliff nesting Swifts and twenty-four Kittiwakes. At this point we were closing in on Dancing Ledges and people eagerly looked out for the Puffins.

Just past Dancing Ledges we had success! We saw five Puffins mixed in with the other auks and were provided with prolonged views of the flock for a long time. This was the highlight for many people on the boat as this species was a new for them.

Puffin – Dancing Ledge

After some breath-taking views of the Puffins, we headed back along the coast. The evening chill picked up but allowed a nice sunset over the harbour mouth as we passed Old Harry Rocks. The only new bird seen for the trip was a Mediterranean Gull before having one last look on Brownsea Lagoon and alighting back on Poole Quay finishing around 21:00.

All in all a stunning trip and here’s looking forward to the next one!

Since Birds of Poole Harbour began in 2012, we’ve seen a wonderful rise in interest and support for our work right across the harbour. Our various projects and research have seen us working with private landowners, tenant farmers, BCP council, RSPB, National Trust and the Dorset Wildlife Trust and its through these progressive partnerships we’ve been able boost the profile of bird conservation, preservation and observation in and around Poole Harbour.

Now, we’re thrilled to be announcing a new partnership with Osprey Packs, a world leader in outdoor and all weather terrain rucksack and backpacks. By some kind of amazing coincidence, their European head office is here in Poole, where of course, it just so happens we’re carrying out our Osprey translocation project, in an effort to restore a south coast breeding population right here in Dorset. Osprey Packs have kindly offered to tell our story to their international customer base and we’re hoping that within a few years Osprey will be breeding right here in Poole Harbour, providing an exciting story to tell.

Below are a few words from our new partners and we look forward to seeing this relationship grow as our Osprey project develops over the coming years.