Acrocephalus schoenobaenus – TELOR YR HESG – Breeding summer visitor and passage migrant. Not recorded from November to February
Earlier records are summarised in Sedge Warbler 1994
Year | First sighting | Last sighting | Notes |
1993 | 14 April | 25 September | Breeding densities: 2 pairs Skokholm, 27-29 pairs Skomer, 14 pairs Dowrog |
1994 | 12 April | 5 October | 3 pairs at Skokholm. 33 territories at Skomer, 12 pairs Dowrog |
1995 | 11 April | 10 October | 5 pairs at Skokholm, 24 territories at Skomer (where an albino was noted and photographed), 15 territories Dowrog, CES at Teifi Marshes revealed record productivity with 217 of 278 trapped being juveniles. Strong autumn passage noted at Llangloffan where almost 500 ringed in mid-August. Controls included 2 ringed in south-west Scotland. |
1996 | 20 April | 30 September | 4 pairs at Skokholm, 26 pairs Skomer where up to 4 albino or partial albino birds noted. 12 pairs at Dowrog |
1997 | 9 April | 27 September | 12 territories at Dowrog, 24 Skomer, 3 Skokholm |
1998 | 17 April | 2 October | 11 territories at Dowrog, 79 trapped at Teifi Marshes CES, (3 from previous years). Newly ringing 34 juvs and 42 adults. |
1999 | 17 April | 14 October | 29 pairs bred at Skomer, 4 Skokholm, 12 Castlemartin Corse, 16 Dowrog, 69 at Teifi Marshes. All-white bird with black eyes, 25 July – August. |
2000 | 20 April | 29 September | 35 pairs bred Skomer, 4 pairs Skokholm; 10 singing males St. David’s airfield 30 Apr, 13 pairs Dowrog. |
2001 | 10 April | 1 October | Reported breeding: Pembroke MP; Skokholm; Castle Martin range, min. of 27 territories; Skomer, 34 territories, fledglings noted 7 July |
2002 | 21 April | 3 October | Breeding: Skokholm – 6 territories identified, 5 pairs definitely bred. Skomer – 39 pairs bred; fledglings noted 27 June. An albino seen on Skomer 1 Aug. |
2003 | 15 April | 27 September | Breeding: Skokholm, 4 pairs with first fledglings seen 8 July; Skomer, 25 pairs bred and fledglings noted from 17 June. |
2004 | 23 April | 25 September | |
2005 | 6 April | 8 August | Breeding: 30 territories at Skomer, 10 Dowrog, 20 Ivor’s Pond/Treleddyd Fawr, 5 singing Goodwick Moor 24 April |
2006 | 20 April | 4 August | Skomer recorded 44 territories, its highest breeding total on record, only single figures bred before 1981. |
2007 | 14 April | 27 September | Between 53 and 59 territories were mapped on Skomer, 20% increase on the 44 territories in 2006. 4 pairs on Skokholm, 2 on Ramsey. |
2008 | 12 April | 31 August | 18 singing birds Teifi Marshes on 8th June |
2009 | 6 April | 19 September | CES ringing at Teifi Marshes caught a total of 271, with 144 on 4 May, and 116 on 10 May. The largest count on Skomer was 34 on 28 May. |
2010 | 14 April | 18 September | 15 territories held on Skomer, 6 on Ramsey |
2011 | 9 April | 5 October | 26 territories held on Skomer |
2012 | 11 April | 8 September | Max count 30+ near Jordanston 24 July |
2013 | 18 April | 31 August | 17 breeding territories at Gupton Farm, 32 on Skomer |
2014 | 11 April | 21 September | Single on Grassholm, 31 May. 44 territories on Skomer |
2015 | 17 April | 25 September | 40 territories on Skomer |
2016 | 11 April | 18 August | Max count, 102 at Teifi Marshes 3 May. Recorded from at least 33 1km squares, with breeding evidence from at least 19 of these. |
2017 | 2 April | 19 September | Recorded from at least 54 1km squares. Breeding evidence reported from at least 35 locations, including 53 pairs mapped on Skomer and 11 pairs on Skokholm. |
2018 | 7 April | 24 September | Reported from at least 41 1km square locations. Breeding evidence from 15 of these. Highest counts from Skokholm were 43 on 9th Aug and 41 on 4th Aug. |
2019 | 1 April | 2 November | Reported from at least 55 locations. Breeding evidence was reported from 28 locations. Largest counts in spring were: 25 on Skokholm 1 May, 100 Teifi Marshes 7 May, and 14 on Skomer 31 May. In autumn: 15 Skomer 15 July, 26 on Skokholm 16 July with 22 there on 1 Aug and 20 on Grassholm 4 Aug. |
Records above extracted from the Pembrokeshire Bird Reports which may contain more information.