Since the last update on UV he has continued to spend his days in a few familiar places but without having a settled routine. Sometimes he is at the coast for most of the daylight hours, occasionally he is barely recorded away from a roost area. An interesting aspect is where he still hasn’t been – no recent recorded activity on the south spit of the Langue de Barbarie, no travel to the southern end of the National Park where the river mouth used to flow into the ocean. His foraging areas have varied but before looking at a couple of examples an ‘overview’. Paul has prepared a migration map which will go up in A2 and A3 versions at Kielder Castle. It is also in the Location Maps section of the blog.
Whilst in ‘overview’ mode the daily MODIS weather satellite data for 20 November showed a red dot at the top of this graphic indicating thermal activity very near Djoudj National Park.
The smoke billowing out to sea covers as large an area as the patchy cloud near the Senegal River mouth. The red dot is in an agricultural area and the likeliest explanation is that the crop is sugarcane. Sugarcane field burning commences in November, the start of the dry season. The fires burn the leaves off the stalks which makes harvesting the sugarcane easier.
Back to UV. His foraging activity has ranged from just offshore to around 4.75 km out over the ocean. On 25 November he went further south offshore than usual.
When there are one minute fixes the change from slower foraging to moving on to try a different area is clear. After speeding south UV slowed down from 15.14, when he circled over a spot before carrying on south then east and north to a shallower area.
In contrast many of his forages look more like the image below.
That shallow area is a popular one.
Data arrived as this blog was being finalised. UV had two excursions today into the deep blue of the ocean, about 3.25 and 4.75 km offshore. Where tomorrow, UV?!