Annual migration

I've been away from the patch for the last couple of weeks on my near-annual migration to Tarifa in southern Spain to witness the spectacle that is the raptor migration across the Straits of Gibraltar as birds of prey from Europe travel south to Africa for winter.

Conditions were very good for the birds for the first half of the trip, with tens of thousands of birds passing through but high - like hayflies as Alan Gilbertson describes them. These were mostly honey buzzards and black kites with short-toed eagles, booted eagles, Egyptian vultures, sparrowhawks and griffon vultures. When the wind blows, which it does a lot in the Straits, the birds drop lower (especially in the Levante wind from the East which could blow them into the Atlantic) bringing them closer to the observers and photographers who are also there in great numbers.

As well as raptors there are migrating storks, waterbirds and passerines alongside the resident birds in the peninsula.

This photo sums up Tarifa for me, on the good days they just keep coming at you...

A group of black kites migrating through Tarifa

There are hundreds more photos to sort which I will eventually get onto my Flickr account.

We've had news from the BTO about a robin we ringed in July last year, it was still in juvenile plumage when we caught it so will have hatched at Druridge. Sadly it was found dead last week in Redcar, where presumably it had taken up residence. Even though Robin is the second-most commonly caught bird by us at Druridge, this is the first ever recovery we've had.

The BTO have also released the annual ringing report for 2017 which you can find on their website.

The report gives ringing totals by species and area and list notable recoveries of birds including a report of a Leach's Petrel we caught in in July 2016 at Druridge (read about it here) which was already ringed, having been caught on Inner Farne two tears earlier. The same bird was caught again on Inner Farne in July 2016, ten days before we caught it at Druridge and it was caught again in July 2017 way up at Sumburgh in the Shetland Islands. Recoveries like this give us a fantastic insight into the movements of these seabirds. Here are the details:

BX91489 Adult 29-07-2014    Inner Farne, Farne Islands: 55°36'N 1°40'W (Northumberland)
Caught by ringer 01-08-2014    Inner Farne, Farne Islands: 55°36'N 1°40'W (Northumberland)   0km   0y 0m 3d
Caught by ringer 20-07-2016    Inner Farne, Farne Islands: 55°36'N 1°40'W (Northumberland)   0km   1y 11m 21d
Caught by ringer 30-07-2016    Druridge Links: 55°15'N 1°34'W (Northumberland)   40km   S   2y 0m 1d
Caught by ringer 26-07-2017    Sumburgh: c. 59°51'N 1°17'W (Shetland)   473km   N   2y 11m 27d

Ringing at both ends of the day

This blog post could've been called 'Burning the candle at both ends' as that is exactly what I did yesterday.

We've been keen to get the nets up at Druridge to do some ringing since we got back from Galloway, but the actual weather or the forecasted weather, which are rarely the same thing, has prevented us.

The forecast for yesterday morning was for the wind to drop by 7am and to be overcast. So not a really early start, but early enough, to let the wind drop, which it did a bit but the cloud cover was zero. We had the nets up by 7am and there seemed to be a lot of warbler activity, with lots of willow warblers or ciffchaffs feeding in the sunlight on the upper branches of the bushes. They must've stayed there as we didn't catch many. A fly-through collared dove was my first on the patch this year - it's common species like this that excite the patch-worker.

It was warblers that we mostly caught;

Willow Warbler -3
Blackcap - 3
Whitethroat - 1
Sedge Warbler - 1
Reed Warbler - 1
Garden Warbler -1

The garden warbler is indicative of migration as this species doesn't breed at Druridge and is a species that we have rarely caught in recent years.

We only caught 17 birds all morning, so there was some time between checking the nets to have a play with my new macro lens, which is also good a good 'portrait' lens for birds in the hand.

juvenile willow warbler

Juvenile whitethroat

Juvenile sedge warbler

Juvenile garden warbler - a scarce visitor to Druridge

I had a go at some insect photography between net-checking. I'll post some photos later inthe week when I've identified them all, but here is a taster...

Small copper butterfly

So, I mentioned burning the candle at both ends... whizz forward 12 hours and we were back at Druridge, just as it got dark to try to catch storm petrels on the beach. We were joined by Laura Shearer and Jenna Berry.

This is the fifth summer we've tried to ring storm petrels at Druridge. Touch-wood, we've never failed to catch birds and last night was no exception. We've only ever caught one bird before midnight and that was last summer, so it was a surprise when Janet checked the nets at 11.40 and found our first storm petrel of the evening.

We were even more surprised by the next bird, which we caught at 12.20... This one was bigger and it had a wing bar on the upper wing - a Leach's petrel.

We controlled a Leach's petrel in 2016 (read the story here) that had been originally ringed on the Isle of May and been caught again on the Farne Islands before we caught it. Last night's bird was un-ringed. 

Leach's Petrel - They have an incredibly 'steep' forehead.(Photo: L Shearer)

Janet processing the Leach's  - you can see the wing bar in this photo.(Photo: L Shearer)

We went on to catch another two storm petrels at 12.40 and 01.20. As we were about to pack up, just before 2am we heard singing from above our heads - was sleep deprivation kicking in, had we heard too much petrel noise - no, it was a Leach's petrel flying above us singing back to the tape. It didn't go into the net, but it begs the question - was it the same bird we'd caught earlier or a different bird, and if so, how many are out there?

All in all, a long but enjoyable day (and night...)

Nocturnal ringing

I am guilty of abandoning my blog a little lately. My camera has been off to get mended, the camera wasn't reading the CF card. It's back now and I am £220 lighter. A blog shouldn't need photographs, but I found it harder to get motivated to write posts without them. It is also a busy time of year with barn owl boxes to check.

Last night we decided, a bit on the spur of the moment, to try a storm petrel ringing session. The weather forecast looked a bit dicey all day, but a quick check at 9.30pm when the wine/ringing decision needed to be made, showed that the showers had cleared and the wind was going to be light.

So, by 10.30 we were all set up on the beach, but it was still quite light in the western sky. By 11.30pm it was dark and we caught our first storm petrel at 11.45. We caught three more before 1.30am, when I was ringing the last of these, Janet returned from the nets with a 'bigger bird'.

The bigger bird was a Leach's Petrel. It was already ringed so it will be really interesting to see it's history. They are much bigger than stormies - almost twice the weight, there is certainly no mistaking them.

Leach's Petrel

This is our third year of petrel ringing at Druridge and we've caught storm petrel on every occasion but this was our first ever Leach's. I've never seen this species anywhere so it was great to have a close look at one.

We caught another two storm petrels, bringing the total to six, before we packed up 2.30am. Whilst we were ringing the last two, we had Leach's petrel calling over our heads and over the net.

Hopefully we will be able to have a few more sessions before the end of the summer.