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Wednesday, 13 August 2025

Early August - reed bed taping, roosts and CES 10 & 11

The end of our Reed Warbler RAS study (and of the breeding season) allowed us to use tape lures for reed bed ringing, so on Friday 1st, Jeremy was at the jetty, and Jerry was in rb2. Their respective catches were 26 + (0), and 39 + (3), with a rise in the numbers of Sedge Warbler moving through. In the evening Peter and Alan J tried another roost but caught just 4 + (1). The species mix for the day was Wren 1, Song Thrush 2, Cettis Warbler 1, Reed Warbler 32 + (3), Sedge Warbler 26, Chiffchaff 
6 + (1), and Blue Tit 1.

After a stormy weekend Alan L and Ron (with Jerry helping) completed CES 10 on Tuesday 5th. It was a nice cloudy day, and despite the persistent breeze the netting area was reasonably protected by the shelter belt, and they had a decent catch of 41 + (7) - equaling the most recent high catch (in 2013) for visit 10. The catch comprised Wren 1, Dunnock 1 + (2), Song Thrush 4, Blackbird 8 + (2), Robin 2, Redstart 1, Blackcap 6, Willow Warbler 2 + (1), Chiffchaff 11, Spotted Flycatcher 2, and Bullfinch 3 + (1). The two flycatchers were juveniles and caught together on the last net round. The stages of their post juvenile moult indicated that they were from different nests (most likely from 1st/2nd broods). Thrushes seem to have had a very good breeding season, with plenty of birds on the lane (between Bwlch "sawmill" and Llangasty) in the early mornings - c35 counted on Wednesday 6th.

A spell of settled weather then enabled us to make almost daily visits. On Wednesday 6th, Jerry was back in rb2 for a (very) cold start - with dew on the nets and reeds, and another tape session. Catching was slow until mid morning when it warmed up for a couple of hours of brisk bird movement. He ended with a decent 44 + (4), made up of Wren 1, Robin 1, Song Thrush 1 + (1), Reed Warbler 19 + (2), Sedge Warbler 3, Blackcap 2, Chiffchaff 12 + (1), Willow Warbler 1, Blue Tit 3, and Bullfinch 1.

On Thursday 7th, Andy was at the jetty for a late am/early pm visit, and had a better than expected catch of 31. The mix was Cettis Warbler 3 (contributing to a new year maximum for the species), Reed Warbler 5, Sedge Warbler 1, Blackcap 3, Chiffchaff 11, Willow Warbler 6, and Blue Tit 2.

On Friday 8th, Peter and Jerry were in rb2 (for a more usual early morning session) which coincided with a decent early "acro" arrival following the recent storm that would have likely delayed the migration movements. The catch of 71 + (15) is probably the 6th highest rb2 catch that we have ever had. Species mix was Wren (1), Dunnock 1, Song Thrush 2, Cettis Warbler 1, Reed Warbler 33 + (12), Sedge Warbler 13 + (1), Blackcap 9, Garden Warbler 1, Chiffchaff 8, Willow Warbler 1, and Blue Tit 2 + (1).

On Saturday 9th, Andy returned to the jetty, also for a normal early tape visit, but the catch had reduced to 17 + (3), made up of Dunnock 1, Cettis Warbler (1), Reed Warbler 6 + (2), Sedge Warbler 2, Blackcap 5 and Chiffchaff 3.

On Sunday 10th, Peter and Alan J were taping at the jetty for an excellent catch of 51 + (2), while Jerry was taping in rb2 for a disappointing 22 + (3), maybe affected by some early morning light mist, while the jetty was clear. The day total was 74 + (5) with a mix of Robin (1), Song Thrush 1, Cettis Warbler 1, Reed Warbler 34 + (4), Sedge Warbler 11, Blackcap 4, Garden Warbler 1, Chiffchaff 17, Blue Tit 4, and Great Tit 1. Early in the jetty session, our 1,500th bird of the year was ringed.

Another jetty roost attempt by Peter/Alan J on Monday 11th had a catch of 28 birds - Swallow 4 plus 3 chicks (at a late Ty Mawr nest), Reed Warbler 6, Sedge Warbler 7, Chiffchaff 6, and Blue Tit 2. Numbers of Sand Martin had improved from the last week or so, with a Hobby just evading capture, it chased the Swallow into the net and with the Sand Martin just past the end of the nets when that happened maybe they thought better of roosting at the Jetty!

On Tuesday 12th, Rachel and Jerry were doing CES 11, and their catch of 28 + (10) was the 3rd highest (for this session) since 2010. Jeremy and Robin were taping (pre dawn) at the jetty for an excellent catch of 30, The day total was 58 + (10) made up of Robin 7 + (1), Blackbird 3 + (2), Song Thrush 1, Dunnock 2 + (1), Grasshopper Warbler 2 (at the jetty soon after dawn), Reed Warbler 10, Sedge Warbler 5, Blackcap 5 + (2), Garden Warbler 1, Chiffchaff 17 + (2), Willow Warbler 2. Spotted Flycatcher 2 (late in the CES session and in the same net as on CES 10 - see above), Blue Tit (2), and Bullfinch 1.


Grasshopper Warbler


Grasshopper Warbler - The two birds were different "colour morphs"


Spotted Flycatcher

Good to catch another two Spotted Flycatchers

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