30 gets closer to home

If you were watching the webcam earlier then, for the first time this season, you may have glimpsed an Osprey. The bird in question was 5N(04) who alighted on the nest briefly before being chased off by an Egyptian Goose. 5N has a nest of her own but, with her mate still not back, she was obviously having a look around. It did however cause a brief surge of excitement in the Lyndon Visitor Centre!

A look at the weather maps in Europe shows that we shouldn’t be too worried that Maya still isn’t back at the Manton Bay nest. France and Spain have been very wet over the past few days and it will certainly have held many Ospreys – and other summer migrants – up as they head north. One of the birds that we know has been delayed – she is now several days later than last year – is 30(05). The latest satellite data shows that at 14:00 this afternoon she was flying north through the western part of France, 100km north-east of La Rochelle.

Although we are still waiting for some data to come through, we now know that she crossed the border from Spain into France on Wednesday afternoon. That evening she roosted beside a small lake, 13km east of the town of Dax, after a day’s flight of 221km from the La Rioja region of Spain. As in previous migrations she passed well to the east of our friends at the Urdaibai Bird Center in the Basque Country.

Over the course of the past two days 30 has made slow but steady progress along the west coast of France; roosting to the north of Bordeaux on Thursday evening and then continuing north past La Rochelle today. Quite when she makes it back to the UK depends on the weather over the next few days. The forecast looks very unsettled and so it may be that she will not arrive back in Rutland until Monday or Tuesday next week. We should get another update from her transmitter over the weekend – so watch this space!

30 has made slow but steady progress through France in the past two days

30 has made slow but steady progress through France in the past two days

Much further south, another Osprey from the UK is also heading north. Roy Dennis has just received the latest data from Blue XD’s transmitter and it shows that the Scottish Osprey has made it across the Sahara. The track below is from 16:13 to 17:42 this afternoon when he covered 65 km north-north-east. The data for the last 5 days will be slowly downloaded through the system (Blue XD has a GSM transmitter) and this will show his route over the Sahara Desert. He now has the Atlas Mountains in his sights. Thanks to Roy for the update.

The latest data shows Blue XD is migrating north through Morocco

The latest data shows Blue XD is migrating north through Morocco

This year we’re following four Finnish Ospreys as part of World Osprey Week, but to date, only one has begun its spring migration. Pertti Saurola has sent an update on the latest locations of the four birds.

Our monitoring of Ilpo’s autumn migration ended on 13 October according to the entry written on the 15th, when Ilpo was “only 28 km from the tri-state boundary between Senegal, Guinea-Bissau, and Guinea.” After that, Ilpo continued his migration outside the coverage of the mobile network, and left us totally in the dark until the 26 February, 2015. After a wait of four and a half months, we received news of Ilpo, including fixes from the last three days, but a huge information gap between 13 October and 24 February. However, the following data packets contained back-dated information for a few days at a time, besides the new information, so the information gap was gradually filled. It was not until 15 March, 2015, that we found out how Ilpo had continued his migration from the 14 October, 2014.

Ilpo flew straight southwest on the 14th and spent his night at the banks of the river Geba, that flows through Guinea-Bissau. During the next day, Ilpo made it into Guinea and spent the night at the maze-like delta of River Kogon, whence he continued some 130 kilometres along the coastline on the 16th, and stopped for the next night at the delta of another river running into the Atlantic. Ilpo ended his autumn migration at the delta of River Konkouré, some 75 km from the capital of Guinea, Conakry.

During the winter, Ilpo’s fishing expeditions have taken him some 25 km inland along the Konkouré, as well as a few kilometres out to sea. When this is being written (24 March), Ilpo is still at his winter range.

The data on Helena’s autumn migration ended on 9 October, 2014, in Ghana, near the border to Togo. It is obvious that Helena has moved out of range of the mobile network. After a long wait, we received an email about Helena on 24 March, 2015, telling us that Helena had spent the night between 23 and 24 March in southern Algiers, in the middle of Sahara! In other words, Helena had set out on her spring migration from her wintering range that was outside the mobile network, and had flown far into Sahara, keeping out of range all the time! Based on our experience with Ilpo’s transmitter, we may expect that the fixes on Helena’s autumn migration, winter range, and spring migration will arrive gradually. For Ilpo, this process took 17 days. The following email (25 March) specified that Helena had already entered Tunisia and was only a hundred kilometres from the Mediterranean coast.

On 24 March, Tero was still at his wintering range in Kenya. We have not received any fixes on Seija and Birgit since last autumn. Many thanks to Pertti for the update.

Over the other side of the Atlantic, Donovan – one of the American birds we’re following as part of World Osprey Week – has resumed his migration after a short break in Georgia. Iain MacLeod has sent the latest data which shows that yesterday morning he was flying purposefully north-east towards South Carolina.

You can view the latest positions of all of the World Osprey Week birds on our interactive map.


3 responses to “30 gets closer to home”

  1. Valerie

    So who was it that touched down on the nest at 12.51 ???? https://www.youtube.com/watch?v=N4doyu1j0to&feature=youtu.be

    1. Kayleigh Brookes

      Hi Valerie, it was 5N(04)!

  2. Suzie

    Thanks Tim … good to know 30 is still making progress … hopefully we’ll have Maya and the rest of our birds home soon! Watch out the Fish Farm … they may all be very hungry!!