This Topic has been set up to follow the Autumn 2012 migration and wintering of satellite tracked ospreys, other than Caledonia and Alba from Loch Garten, who are followed on this thread, Tracking Caledonia & Alba
This topic replaces Satellite Tracked Ospreys (non-LG) Mar-Aug 2012
N.B. There are still some missing details (and possibly birds) which I will add once the information becomes available.
jsb said: Stan had over four days on Iberian peninsula to feed. From arrival 1800hrs GMT, 12th until he left, before being recorded pm south of Gran Canaria on the 18th. I was making sure that it was unlikely that he was 'running on empty', when he arrived on the CV islands, which if he had been, then he could have been too weak to fish. However, since he was able to island hop, we should be able to assume, that he arrived in petty good condition, despite the long sea crossing. So assuming that sea fishing off the islands' coastlines did not present a problem for him, we can then say, that there is no reason to assume that he was weak or hungry i.e. in good condition.
Stan had over four days on Iberian peninsula to feed. From arrival 1800hrs GMT, 12th until he left, before being recorded pm south of Gran Canaria on the 18th. I was making sure that it was unlikely that he was 'running on empty', when he arrived on the CV islands, which if he had been, then he could have been too weak to fish. However, since he was able to island hop, we should be able to assume, that he arrived in petty good condition, despite the long sea crossing. So assuming that sea fishing off the islands' coastlines did not present a problem for him, we can then say, that there is no reason to assume that he was weak or hungry i.e. in good condition.
Stan left Scotland at 10.30 am on 12th September and arrived on an island near Capre Verde at 22.00 GMT on 19th September. There is no way he spent four days over the Iberian peninsula.
In my view he did not fish until he arrived in Cape Verde.
Look at Alba. She chose to ignore the fish in the Senegal river even having crossed the Sahara. She flew on to where she was going. Ceulan on the other hand decided to stop as soon as he got to a supply of fish.
Tiger Signature
Hazel b said: Stan had over four days on Iberian peninsula to feed. From arrival 1800hrs GMT, 12th until he left, before being recorded pm south of Gran Canaria on the 18th. I was making sure that it was unlikely that he was 'running on empty', when he arrived on the CV islands, which if he had been, then he could have been too weak to fish. However, since he was able to island hop, we should be able to assume, that he arrived in petty good condition, despite the long sea crossing. So assuming that sea fishing off the islands' coastlines did not present a problem for him, we can then say, that there is no reason to assume that he was weak or hungry i.e. in good condition.
[/quote]
Tiger: I believe that Stan had adequate time to fish in Spain or Portugal. First point is that we know he flies overnight and that makes a big difference. Back-calculating the time taken to arrive south of the Canaries, with probably a stop on Gran Canaria, a distance of 850 miles, would mean that he left the Portugese coast on the 17th, or possibly the 16th. On Gran Canaria, I do not think there is much in the way of fishing, unless in the sea. That's how I came to the conclusion that when he arrived on CV, he was in pretty good shape.
ChloeB & Tiger's Osprey Data Site
Sat track schedule Spring 2014
LG 7 days; RW & SWT nil; LDOP varies
JSB Do you have any evidence that Stan did any fishing on route? Fishing would require him to make multiple dives and then spend time eating the fish. The fact that he he flew further than any known osprey in a faster time suggests that he did not do any fishing until he reached Cape Verde.
This is also true of Alba. There is no evidence that she fished until she reached her winter quarters.
Hazel b said: JSB Do you have any evidence that Stan did any fishing on route? Fishing would require him to make multiple dives and then spend time eating the fish. The fact that he he flew further than any known osprey in a faster time suggests that he did not do any fishing until he reached Cape Verde. This is also true of Alba. There is no evidence that she fished until she reached her winter quarters.
Stan's route in south Portugal for example. Below are some opportunities, the stops on the routes coincide with water, so far as I can tell from the limited information we have.
RD Stan in Portugal.
As we have said many times, it would be great if we could track Roy's birds for ourselves on GE.
ChloeB & Tiger's Osprey Data
Erika has reached her wintering quarters in the Eastern part of Sudan near the River Ar-Rahad. :
Rothiemurchus migrating strongly throught the Sahara. See here
Ilmar is in Chad. His route is not too far away from Eriks:
Relative positions of Ceulan and BlueYD. I believe that Fiddich is also in the area NW of Louga also:
Ilmari's migration seems to go fine :)
my photos in flickr