Wildlife Diary Sunday 8th September, posted by Rangeremma
by Lindsey
Well Blue YZ is certainly getting on with her migration. After an overnight stay on the Isle of Man on Thursday she carried on past Wales through France and onto Spain in just three days. To compare this to last years chicks Blue YD was in Spain on his second day of migration making landfall to the east of Blue YZ whereas her brother Blue 44 was…. still in the north of England!
The Isle of Man regularly has migrating Ospreys stopping over on the way and Ian Pawson tells us she was in a deep sided valley which has trout in it so hopefully she refueled there.
She then skirted Wales before heading round Cornwall. We were initially surprised by this as it seemed an extreme dogleg for the journey but on examining weather records for the area it looks like there was very heavy rain and hail there so poor visibility so she was flying around that. She did a funny little double back on her way over which you’ll see on the satellite tracking page which might also be to do with the weather. It just makes you realise how amazing Ospreys are that our chick can do that at such a young age.
After roosting in the north of France near Ploudalmezeau, she headed over the Bay of Biscay on a mammoth 14 hour flight. She was roosting at 6am in woodlands near Ria de Villaviciosa, an estuary presumably full of fishy goodies but by 7am she was back on the move.
Her data shows she’s been in flight more or less constantly since leaving Loch of the Lowes with her flight speeds ranging from 9mph over the Bay of Biscay to 46mph over the Celtic Sea. Her flight altitudes also vary from 120m in Spain to 810m over Wales.
Our next batch of data should be available on Tuesday so we’ll see where she is then – will she be in Africa or will she stay in Spain? She’s 100 days old tomorrow, I wonder where she’ll be.
Our male was very much in evidence yesterday but hasn’t been seen today, it too early to say if he’s left yet but the timing would fit. We know males often wait a couple of days after the chicks have left, perhaps to make sure they’ve gone.
Fischadler Loch Garten - Oighrig (m) hat die Westküste von Mauretanien erreicht.
Sein Bruder Breagh bleibt vorerst in Frankreich und fischt an der Loire...
4 minutes ago by Mike H
BREAGHA
Breagha is still touring the Loire and Vienne rivers so must have found some good fishing and perhaps this is where he plans to stay until it is time to return to the UK. On 6 September he spend most of his time around Lac de Tétine with a short excursion to the Vienne River. On 7 September he managed a 17 km trip visiting the Loire River opposite Montsoreau at 09.00 GMT then flew NE up the Loire to near Parney before returning SE to roost at 19.00 GMT to the W of Savigny-En-Veron. On 8 September he had a relatively busy day but still travelling only 26 km. He started at 05.00 GMT travelling NW to the Loire then SE back to Lac de Tétine at 11.00 GMT. He then set off NE to the Loire again where he was resting at 13.00 GMT between La Batardeau and La Chapelle-sur-Loire. The rest of the day was spent on the Loire where he eventually came to roost.
OIGHRIG
He finally reaches the coast having negotiated the dangers of the Sahara. On 6 September he travelled SW from his overnight roost covering some 340 km between 08.00 and 20.00 GMT at times at an altitude of over 200 m. He stopped to the NW of Atar at 14.00 GMT and passed to the SE of Akjoujt at 18.00 GMT before arriving at his overnight roost at 20.00 GMT in what appears to be an area of vegetation on the side of a wadi. A shorter journey of only 190 km on 7 September having left his overnight roost at around 06.00 GMT reaching the coast at 16.00 GMT. He explored a small area of this coastal stretch before finally coming to roost at 20.00 GMT in the Trarza region of Mauritania. On 8 September he briefly visited the coast before travelling S to a stopover between 14.00 and 16.00 GMT on what appears to be a ‘stream’ then continued S over the coastal town of Nouakchott to finally roost inland at 20.00 GMT. A modest distance of only 80 km on this day.
CALEDONIA
She has again been recorded mostly on the Rio Guadalquivir and Rivera De Huelva site for the last three days. On 6 September at 11.00 GMT she was travelling W 10 km from the Rio site and near the town of Torre de la Reinn. At 09.00 GMT on 7 September she was 8 km NE of the Rio site SE of the town of San José de la Rinconada and travelling leisurely S over an area which has a number of manmade stretches of water.
Fischadler Rutland Water site B - Ein adultes Weibchen #30 hat das Mündungsdelta am Senegalfluß erreicht!
A Senegalese sunrise - By Tim on September 9, 2013
She's made it! The last batch of GPS data showed that last night 30 roosted on the banks of the Senegal River, having completed her crossing of the Sahara. Although, strictly speaking, she is still just in Mauritania, she will have enjoyed a Senegalese sunrise this morning.
The previous data had shown that, after flying 900km in two days, 30 had reached the deserts of Western Mauritania. She still had at least one more day's flying to complete the desert crossing, but was making excellent progress.
On Saturday morning 30 began migrating at 9am. Three hours later, at midday, she had already covered 123 kilometres and was continuing on the same the distinctly South-westerly heading that she had maintained the previous afternoon. The direction of her flight suggested she was heading for the Mauritanian coast and her afternoon flight confirmed that. By 7pm she was just 4km from the Mauritanian coast, a few kilometres north of the capital, Nouakchott. Interestingly, the GPS data showed that she was flying due east at 7pm, so there is every chance that, having fished in the sea, she was now flying inland with her first meal for several days. An hour later she was perched 4km further east, and that is where she settled for the night after a day's flight of at least 314km. After three days and 1200km, the majority of the desert was behind her.
Next day she resumed her migration shortly after 9am, initially flying South-east to avoid Nouakchott and then following the coastline south. She made steady progress for the rest of the day at an altitude of around 700 metres. By 5pm she had flown just over 200km and was passing just to the West of the vast Djoudj National Park. This huge wetland is home to many Ospreys each winter as well as hundreds of thousands of wildfowl. Myself, John Wright and Paul Stammers enjoyed a very memorable visit there in 2011. To read about our trip, which included finding an English Osprey, click here.
By 7pm 30 was clearly looking for somewhere to roost for the evening and an hour later she was perched just over a kilometre from the banks of the Senegal River after a day’s flight of 262km. The river forms the border between Senegal and Mauritania and, like, Djoudj, supports a good population of wintering Ospreys.
Having reached Senegal it will be very interesting to see what 30 does now. She could well spend her winter in Northern Senegal, but the speed of her migration – she has only been migrating for 11 days - suggests she is probably going to head further south. The next batch of data will be fascinating.
Gerade wollte ich mich mal ein bisschen zum "Black Eagle" schlau machen,
habe bei Wikipedia gesucht und nicht gleich richtig gefunden und dabei folgendes gelernt:
Die auf der Africam-Seite angegebene Bezeichung "Black Eagle" ist wohl nur umgangssprachlich,
weil eigentlich gilt sie für eine asiatische Adlerart: http://en.wikipedia.org/wiki/Black_Eagle
Blue YZ heads for the hills (and a meeting with her brother?)
Posted on September 10, 2013 by jonathan
Blue YZ appears to have had enough of flying over water for the time being, following her early seabound adventures, which included a non-stop flight of up to 16 hours across the Bay of Biscay!
Having reached the coast of Asturias sometime in the early hours of the 8th, Blue YZ allowed herself a few hours recuperation (perhaps a spot of fishing?) by the mouth of the Ria de Villaviciosa, east of Gijón before resuming her southward journey.
By 5pm she was approximately 120km (70 miles) inland, roosting in trees beside the Ria Bernesga, south of the historic city and provincial capital of León. She stayed there until at least 7am the following morning.
To reach this point she will have crossed the Cantabrian Mountains, a mountain chain stretching east-west along the border between Asturias & Cantabria to the north and Castile & León to the south. Many of the peaks reach 1800m (6000ft) with the highest exceeding 2500m (8000ft). Google Earth gives you some impression of their scale.
Yesterday (9th) is mostly a mystery at the moment as we have virtually no data after 7am. However, by 6pm Blue YZ was roosting again in NW Extremadura by the Rio Alagón, a tributary of the Tagus, Spain’s longest river. It is part of the same catchment as the Alcántara reservoir – the last known location for Blue 44 prior to his disappearance last November. Blue YZ’s roost location lies approximately 30km (17 miles) NW of the reservoir. Who knows, maybe a family reunion is on the cards!
So far Blue YZ has covered a total of 2061km (1280 miles) – not bad for 5 days work! Maybe she’ll be in Africa by the time the next batch of data comes in. You can view the current data for yourselves at http://scottishwildlifetrust.org.uk/thi ... do/osprey/
Speaking of family, it now appears that the male has definitely left Loch of the Lowes having not been seen since Saturday, bringing yet another osprey season to a close. There’s still plenty to see on the reserve at this time of year though so a visit is always worthwhile.
Fischadler Loch Garten - Oigrig stürmt weiter voran & Breagha bleibt wo er ist
Oirigh presses on and Breagha stays put.
30 minutes ago by Mike H
There is only data for two days for both Breagha and Oighrig but a full data set for Caledonia. There is no need for alarm as this often happens due to the vagaries of satellite transmissions, etc.
BREAGHA
He has not been very active over the last couple of days. On 9 September he moved SW from his overnight roost near Chapelle-sur-Loire on the Loire and spent the morning and early afternoon on the Loire opposite Montsoreau before travelling in an SE direction along the Vienne River to Lac Tétine which seems to have become a favourite spot. This is a small lake which translates to Lake Pacifier/Dummy and is part of a French ZNIEFF site which is the equivalent of the UK SSSI (Site of Special Scientific Interest). The fishing must be good (hopefully not of protected species!) as he appeared to spend all of 10 September around the lake.
OIGHRIG
He continued his journey S on 9 September travelling around 115 km before coming to roost. He started the day by spending at least two hours on the coast 16 km W of his overnight roost. Presumably he was catching breakfast. He then flew off SSE to roost at 18.00 GMT 12 km N of Mederdra in Mauritania. He set off early on 10 September travelling only 12 km before stopping for about four hours. He then flew S to stop at 18.00 GMT to overnight on a small lake 20 km NNE of Dagana on the Senegal border. Today’s temperature forecast is 38 deg C so the lake must provide a welcome refreshing dip! The journey today was a modest 47 km.
CALEDONIA
She appears to have had a really idle three days around the Rio Guadalquivir site. The fishing must be really good so why waste energy flying around! The weather in this area of Spain is also very hot in the high 20 deg C and only a slight chance of rain. We have not shown Caledonia’s location on a map for some time so here is a view of her favourite location.
When 30's last batch of data arrived, we were speculating how far south she would continue to fly. Would she winter in Northern Senegal or would she head further south towards The Gambia or Guinea? Well, it now looks as though we've got an answer. At 3pm on Monday afternoon 30 stopped on the Senegal coast midway between Dakar and St Louis in Northern Senegal. More than 48 hours later, at 9pm on Wednesday evening, she was still there; suggesting she has arrived at her winter home. If her location on the Senegal coast sounds familiar, that's because, remarkably, it is just 2km south of where our previous satellite-tagged Osprey, 09(98) used to winter!
The previous data had shown on Sunday night, 30 roosted just north of the Senegal River. By 8am next morning she had moved 2km south from her overnight spot and was perched beside the river, almost certainly eating breakfast. She was probably disturbed by local fisherman soon afterwards, because an hour later she was perched 8km to the south-east. Then, at 10am she had moved again: a further 1km to the south-east.
She must have resumed her migration sometime after 10:30am because, at 11am, the next GPS position showed that she was 9km to the South-east, flying south at 21kph at an altitude of 500 metres. She continued on this course for another hour, before changing to a more south-westerly heading at midday. She must have know she was now close to her winter home, and three hours later she arrived on the coast after a day's flight of just under 100km.
Having arrived on the coast, 30 has made only short local flights of up to 5km. This behaviour is typical of an adult Osprey on the wintering grounds. They spend most of their day perched in a favoured location and then make short flights to fish once or twice a day. In 30's case her favourite perches seem to be located in an area of scattered trees, less than 100 metres from the beach. From here it is just a short flight out to sea, where a wealth of fish will make hunting very easy for an adult Osprey.
If 30 does remain in this area for the winter, her favourite perches are just 2km south of the ones favoured by 09 during the winter of 2011/12. This means that she and 09 would have been neighbours for seven winters. When you consider that 09 wintered almost 1500km away from the one other Rutland Osprey that we have tracked using a GPS transmitter, this is a truly remarkable coincidence. As the map below shows, 30's daily flights (red dots and yellow lines) are already overlapping with the flights (in orange) of 09 during the winter of 2011/12. If only he was still alive!
Assuming that she has arrived at her winter home, 30's migration is the fastest we have recorded. She flew over 4600km in just 12 days, four days quicker than 09's 16-day migration in autumn 2011. When you compare their migration routes, 30's flight was more direct through Europe, but once they arrived in Africa, they were remarkably similar, particularly through Morocco. The data demonstrates what incredible navigators adult Ospreys really are.
The next batch of data should arrive from 30's transmitter over the weekend, so check back for an update on Monday.
Die Weißkopfseeadler sind zum Nest zurückgekehrt und werden sicher bald mit der Brut beginnen.
Es gibt 2 Ansichten:
Direkt ins Nest oder in die Umgebung
Die Bildqualität ist unglaublich.
Nachts gibts Infrarot Bilder.
