UV – out and about a bit!

The last update on UV mentioned that he hadn’t visited the mainland since mid-June. He obviously read that because he went there the next day! And he has continued to cross the tidal lagoon every few days since. There has been a little rain, but the rainy season isn’t in full flow yet so is not a significant factor in his new behaviour.

UV mostly heads east then north, influenced by the prevailing NNW winds. Here is one trip on 22 July.

UV explores a tributary of the Senegal river

UV explores a tributary of the Senegal river

He spends a varying amount of time on the mainland. So far he has always returned to base before sunset. Some days he has only travelled as far as the inshore lagoon opposite the Langue de Barbarie. The next image is 28 July.

UV forages on the mainland

UV forages on the mainland

He flies at over 300m ASL or higher at the start of most of the longer forays.

When UV stays on the Langue de Barbarie he tends to hunt at sea more often than in the tidal lagoon. The number of fixes increase after the early morning period so at least one other flight is probably not captured. This is 25 July when the data showed three offshore journeys.

Three trips to sea, probablt two over the lagoon

Three trips to sea, probably two over the lagoon

Paul has used his newly developed animation tool to show a day by day visual record of UV’s July activity. It also indicates faster flying speeds by deepening colour. This gives a really good idea of UV’s range and behaviour, and is quite different to the 7H animation. Thanks again to Paul.play

This entry was posted in Abroad, Blue UV, Migration, Osprey updates and tagged , . Bookmark the permalink.

2 Responses to UV – out and about a bit!

  1. Vic Paine says:

    Thank you Paul, I have an inkling of the amount of effort it must take to produce these animations. It shows so well the variation in activity. If only there were more like you we might be able to sort out the difference between male/female behaviour and how much its dependant on chosen wintering area. Far too many variables to get a sensible answer from just two birds but an amazing insight. Thank you

  2. Cheers Vic. I am gradually refining these techniques with the object of presenting the information in a way that is useful and at the same time easily understood.

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