Calf blog - Weeks 3 and 4

Calf blog - Weeks 3 and 4

Photographers at sunset

Read all about weeks 3 and 4 on the Calf!
Calf photographers thermal image

Calf photographers team photo with the thermal image camera

Weeks 3 and 4 saw the beginning of our adult education courses which filled the observatory with enthusiastic photographers, dry stone waller’s and birdwatchers. Starting with the photography course run by Mike Radcliffe.  It was fascinating to watch these artists capture and present our island and its diverse wildlife. Some of the highlights included shots of Grey Seals, seabirds, rabbits, and Loaghtan lambs. The photographers were then joined by the Manx Shearwater experience group for one night of manxie dazzling. We managed to find 21 birds including one that had been ringed 20 years prior!

Photographers at sunset - Calf

Photographers at sunset

Next to join us was Pat Griffiths and David Fisher who occupied the middle lighthouse for some practical dry stone walling graft, with their four enthusiastic pupils. Over five days the waller’s fixed up the lower lighthouse walls with spare stone as part of the lighthouse maintenance with their new status as historic protected buildings.  Finally, we were joined by Tim Earl and his wife Liz, along with 5 eager beginner birdwatchers. 

Dry stone walling

Dry stone walling course

They were out birding in rain and shine, from early morning with the bird ringers, to late night manxie dazzling, learning all about the ornithology of the Calf. This included a presentation from Aron about the status of different bird species and what we have learnt about bird populations from ringing data. They also joined us for a round island survey on Steve’s boat to count the breeding seabirds. A huge thankyou to all of our guests for their fab company, help with all aspects of Calf life and the endless donations of cake and biscuits that motivates the wardens daily!

heerring gull chick

Herring gull chick

Despite the distraction of new housemates, the Calf team has still been hard at work with regular trips to the Gull colonies for more Gull nest counts which is becoming increasingly exciting as eggs are beginning to hatch. Unlike your typical chicks, Gulls are not confined to the nest but roam freely, so it takes effort to locate and keep track of them.

Mollie holding a female eider

Mollie holding a female eider

Eider nests are still regularly being found by both the ringers and the estate team. Our star eider locator, Christa, is permanently on edge while wading through heather during long tail bait monitoring after coming across 4 new nests on her travels. 

Mollie, Aron and Rob kayaking

Mollie, Aron and Rob kayaking

On Tuesday we were treated to an experimental kayaking trip from Cow Harbour to Baie Fine to search for accessible Shag and Razorbill nests. Thanks to Steve Watt and the lovely team of kayakers who towed boats across for us to use and kept us all afloat, even Aron, who apologetically, but repeatedly, collided into the rest of us.

Aron at prize giving

Aron at prize giving

Rob daringly disembarked at several sites and managed to ring 4 new birds as well as locate 29 new Shag nests, so it was a very successful trip. It ended with a mini prize giving where Aron was presented with a trophy for not capsizing, well done Aron!

Robin fledgling

Robin fledgling

Exciting wildlife highlights from the past two weeks include the first Puffin sighting of the year by the Manx Ornithological Society on the 15th. Since then, we have had two Puffins spotted consistently rafting on the water near the Puffin decoys at Kione ny Halby, so keep an eye out. We also had the first sightings of Basking Sharks this year out at Cow Harbour by Lara Howe and a Minke Whale on the same day. A pod of 6 Risso’s Dolphins were spotted out towards the puddle by Aron on the 13th, and after my first and only brisk jog on the Calf, I got to watch them for a good 30 minutes swimming around Burroo which was a first for me. We’ve also had several young fledglings turn up in the ringing nets this past week including Robins, Goldfinches, Stonechats and Blackbirds.

Colour ringed shag

Colour ringed shag

We began the Shag colour ring project, funded by Manx National Heritage, in week 3, which involves ringing the birds with a taller, lightweight ring, that is bright red and has a specific code of 4 letters printed along the side. The colour rings allow passers-by to identify the birds so we can retrieve information about the survival rate of chicks that leave their nest. So if you’re visiting the Calf and see any colour ringed birds around, please note down the code or take a photo and let us know where and when you saw it. This project will provide vital data on this red listed (BoCC4) species as breeding numbers fell by 51% between 2000 and 2019 on the Calf. It is of great importance that we monitor the population and attempt to understand the drivers behind their decline.

Shag chick

Shag chick

Our first bird to be colour ringed was down at Kione ny Halby and had three huge chicks on the nest. This trip was my first time seeing a Shag chick and it definitely lived up to my expectations. The chicks are already adult size but covered in downy feathers, like a Shag in a jumper! They are yet to develop their classic bright green eyes, instead they are a pale grey colour, but they are just as aggressive and feisty as their parents.

White ermine moth

White ermine moth from the moth survey

Estate work by myself, Christa and Dan also continued over the past couple of weeks with continual track repair across the island, long tail bait monitoring, clearing of Fuchsia from around the observatory, slipway maintenance, weekly butterfly transects, Bracken clearing and flailing, maintaining the guest rooms, chopping firewood and my personal favourites include the moth trap surveys and monthly seal survey. 

Pebble prominent moth

Pebble prominent moth from the Calf moth survey

Our total count for the island came to 242 Grey Seals and 3 Common Seals. Despite a very poor start to the season for moths, with the weather gradually warming up we have had a maximum of 26 moths between two traps over one night. Some highlights include a White Ermine, Pebble Prominent, Spectacled Moth, Shuttle-shaped Dart (second record for the calf), and a Pod Lover.