Weather highlights. And a bit about the juveniles!

The blog is becoming more about the weather than the juveniles. But as it is increasingly changeable the question of the impact on them – and fish – arises.

For UV in SW Portugal the weather picked up last weekend but it was cooler than he has been used to at 15-16°C. Tuesday was showery and on Wednesday 93mm of rain fell in the area during thunderstorms in strong winds. Below is an image from the Earthschool animated surface wind map for Wednesday.

Strong southerly winds of SW Portugal: late afternoon 19 November Image from Earthschool

Strong southerly winds of SW Portugal: late afternoon 19 November
Image from Earthschool

What effect has the wetter and windier weather had on UV? On Monday, a reasonable day, the fixes showed him moving fairly frequently albeit still only around the reservoir; yesterday he was so inactive the fixes were roughly every 70 minutes; he was mainly sheltering in trees although he flew over water in mid afternoon. Today a couple of fixes in the morning showed him flying but over land. During the last week he has been on the southern side of the reservoir more, with a popular new day roost and also a new night roost on a peninsula which appears to have relatively shallow water on the west side. Perhaps UV finds fishing easier in that part of the reservoir.

The forecast for the next few days is warmer ( up to 21°C) weather until Monday then it will be more showery and cooler, especially overnight, by the middle of next week. Winds will change from a S/SE direction to NW by Sunday and it will feel much colder when wind speeds pick up later next week. Many coastal and estuarine fish migrate for the winter but ospreys overwinter in Portugal both on the coast and at the inland reservoirs so there must be sufficient supply. How tough successful fishing will become remains to be seen. If UV stays, of course.

In Azemmour 7H saw a drop from the mid 20°Cs to 20°C for the early part of the past week and 25mm of rain fell on 14 November. Temperatures have been higher since Wednesday although they are expected to fall again to 20°C or a bit less by next week, with some rain over the weekend.  Gales are expected in parts of Morocco and it will be windier than 7H is used to in Azemmour with a shift to a northerly direction by Monday. Will she decide it is time to head south? She had a jaunt on 17 November, travelling about 30 km down the coast before turning back. No stops en route. As you can see in the image below, she set off soon after sunrise so if the data for the day had come in just after the 08.26 GMT fix it could have looked as if she was off!

7H explores the coast

7H explores the coast

The pylons are still popular, but she is spending more time away from there than on them. In the last week she has roosted near the river slightly more often than on a pylon. And she has definitely got a new affinity for the coastal strip on the east side of the river mouth.

7H activity near the mouth of the river 16-17 November

7H activity near the mouth of the river 16-17 November

On the image you can see the cluster of fixes quite near the estuary (more about that later) but also some further north.  On 19 November 7H really took a shine to them, spending over 3.5 hours at two points. She also visited them on 18 and 20 November but not for as long.

A popular spot or two on 19 November

A popular spot or two on 19 November especially

Returning to the spot nearer the estuary, the current Google Earth image suggests it was a strange spot to sit because of human activity nearby.

A bit crowded?

A bit crowded?

But a historical image shows that by November the beach is rather more deserted.

A November image

A November image

Will it be a week before another post or will one of them make a move? Who can tell, certainly not this analyst!

This entry was posted in Blue 7H, Blue UV, Migration, Osprey updates and tagged , . Bookmark the permalink.

3 Responses to Weather highlights. And a bit about the juveniles!

  1. Tiger Mozone says:

    Decision day is approaching. We should know in the next two weeks or so if these birds are going to move on. December 5 is the latest I have seen a bird decide to strike out for Africa. Place your bets now.

  2. Vivien Finn says:

    Thank you for the update, Joanna. The birds may not be moving very far but it’s always good to know they are active. Maybe in the coming days we’ll see at least one of them move on. We wish!

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