Oldbury Power Station Common Birds

OPSBirds

The second table below shows the most commonly seen species at Oldbury Power Station in the 10 years covering Sept 2007 to Oct 2017. The table has the 100 species (out of 189 species seen in this period) that I have logged most often during my 1703 visits. I log all birds seen on my visits using BTO Birdtrack (and have done since February 2003). (79,334 bird records logged in the 10 years covered below ! That's an average of 47 species per visit.)

The table shows the percentage of visits the species has been seen in the 10 year period in the 'Report %' column, then the next column ('Old %') shows the percentage of visits in the period Feb 2003 to Nov 2012, when I first created this table. (811 visits logged Feb 2003 to Nov 2012.) The last column has the difference between the other two columns, so shows how each species has changed on the site over time.

There are some surprises in the Reporting Rate figures for the 10 years. The site is very good for Bullfinch, thanks to planting of native shrubs and trees, and it is great to see a figure of 60%. The resident pair of Peregrines are seen 2/3rds of all visits (64.1%), and are seen more often than the resident Kestrels (50.3%). It is rather surprising to see Dunlin at only 54.6%, but they clear the site at high tide as the lagoons are no longer favourable for roosting.

Also, some species seem to be doing much better here than in the wider countryside: Song Thrush (80.2%), Linnet (71.3%) and Reed Bunting (63.6%).

Great Spotted Woodpecker seen on 40.4% of visits, and increasing as the trees on site have matured. Raven seen more often (30.3%) than Collared Dove (28.1%) and much more often than House Sparrow (11.4%) which are only seen when they wander from neighbouring farms. Stonechat has been seen on 22.2% of all visits; they are usually present from Autumn to Spring.

There are two species that have fallen out of the top 100; Little Owl (down from 6.5% to 2.1%) as it has not be seen for the last 3 years, and Pintail (down from 5.2% to 2.2%), due to the Lagoons no longer having exposed water and mud for them to dabble in.

Looking at how species are faring now compared with the old figures, there are seven species that have increased by more than 10%, and nine species that have fallen by more than 10%.

Selected Species Report % Old % No. of recs. Difference
Little Egret 33.0 13.6 562 19.4
Cetti's Warbler 19.3 1.1 329 18.2
Mute Swan 55.1 39.8 939 15.3
Canada Goose 60.6 48.7 1032 11.9
Tufted Duck 63.7 52.2 1084 11.5
Goldcrest 50.4 39.3 859 11.1
Pied Wagtail 82.2 71.9 1400 10.3
         
Grey Heron 75.5 86.2 1285 -10.7
Jackdaw 68.3 79.1 1163 -10.8
Shoveler 14.9 26.4 254 -11.5
Rook 63.4 75.8 1080 -12.4
Stock Dove 46.6 59.3 793 -12.7
Lapwing 45.6 59.6 776 -14.0
Greenfinch 62.4 77.7 1062 -15.3
Chaffinch 70.4 87.3 1199 -16.9
Feral Pigeon 60.1 81.7 1023 -21.6

Little Egret and Canada Goose have shown a strong growth nationally, reflected in these figures. Also Goldcrest has recently shown an increase locally, due to mild winters. Cetti's Warbler was absent from 2007 to 2012, but has since been ever-present. Mute Swan has taken to breeding on the lake annually. Tufted Duck has increased in numbers breeding on the lake, and also more young have been surviving. Not sure why Pied Wagtail has increased reporting rate. The winter roost of several hundred on the outbuildings seems to have been stable. It might be that there has been less industrial activity on-site due to decommissioning, giving more feeding opportunity ?

The Feral Pigeon flock has shown an obvious decrease in numbers as there are less people on-site, sharing sandwiches with them ! There was still a flock of 20+ in 2014, but this has decreased to less than 10 now. In the table for 2003-2012, there are three species that have dropped out of the top 20: Feral Pigeon, Chaffinch and Grey Heron. (And the three species that have replaced them are: Cormorant, Moorhen and Pied Wagtail.) Chaffinch numbers during the breeding season have reduced (to point of being absent this year). Grey Heron (and Shoveler) reports are down due to the Lagoons no longer having exposed water and mud. Greenfinch are probably down as bird feeders are no longer filled. Lapwing, Stock Dove and Rook numbers being down reflect the wider local and national picture. I do not know why the Jackdaw figures are down, as they are ok locally and nationally. (But, there is no corvid roost in woods at Jobs Green Farm or along the road towards OPS so far this winter (2017/18).)

 

Selected Species Report % Old % Difference
Mallard 99.9 99.9 0.0
Magpie 99.4 99.5 -0.1
Carrion Crow 99.3 99.6 -0.3
Herring Gull 98.8 98.9 -0.1
Woodpigeon 98.5 99 -0.5
Blackbird 97.4 98 -0.6
Starling 93.9 98.1 -4.2
Robin 93.9 93.9 0.0
Lesser Black-backed Gull 93.1 99.6 -6.5
Blue Tit 92.0 93 -1.0
Dunnock 88.9 93.4 -4.5
Wren 88.2 88.5 -0.3
Black-headed Gull 88.0 86.2 1.8
Great Tit 86.9 91.5 -4.6
Curlew 85.9 84.4 1.5
Pied Wagtail 82.4 71.9 10.5
Goldfinch 81.2 81.6 -0.4
Song Thrush 80.2 84.7 -4.5
Moorhen 77.9 76.6 1.3
Cormorant 77.3 81.5 -4.2
Long-tailed Tit 75.6 74.7 0.9
Grey Heron 75.6 86.2 -10.6
Linnet 71.3 71.4 -0.1
Chaffinch 70.6 87.3 -16.7
Great Black-backed Gull 69.7 75 -5.3
Jackdaw 68.5 79.1 -10.6
Coot 68.4 60.7 7.7
Shelduck 66.9 74.7 -7.8
Chiffchaff 65.0 62.2 2.8
Peregrine 64.1 55.5 8.6
Tufted Duck 63.8 52.2 11.6
Reed Bunting 63.6 63.4 0.2
Rook 63.6 75.8 -12.2
Meadow Pipit 63.4 72.2 -8.8
Greenfinch 62.5 77.7 -15.2
Teal 61.0 62.9 -1.9
Canada Goose 60.7 48.7 12.0
Feral Pigeon 60.2 81.7 -21.5
Bullfinch 60.0 64 -4.0
Common Gull 58.4 66.3 -7.9
Green Woodpecker 58.1 64.6 -6.5
Buzzard 57.4 64.4 -7.0
Mute Swan 55.3 39.8 15.5
Wigeon 55.0 54.2 0.8
Dunlin 54.6 53.9 0.7
Swallow 51.8 49.9 1.9
Oystercatcher 51.5 44.5 7.0
Goldcrest 50.6 39.3 11.3
Kestrel 50.3 53.2 -2.9
Pheasant 48.7 46.8 1.9
Blackcap 48.3 49.3 -1.0
Stock Dove 46.7 59.3 -12.6
Lapwing 45.7 59.6 -13.9
Jay 43.0 48.2 -5.2
Redshank 40.8 47 -6.2
Great Spotted Woodpecker 40.4 34.9 5.5
Skylark 38.9 42.7 -3.8
Redwing 37.1 34.9 2.2
Whitethroat 35.8 36.1 -0.3
Little Egret 33.1 13.6 19.5
Turnstone 32.1 31.3 0.8
Reed Warbler 30.6 30.7 -0.1
Fieldfare 30.4 32.8 -2.4
Raven 30.3 24.1 6.2
Collared Dove 28.1 23.7 4.4
Ringed Plover 25.7 24.8 0.9
Sparrowhawk 24.2 30.8 -6.6
Stonechat 22.2 22.2 0.0
Lesser Whitethroat 20.2 19 1.2
Cetti's Warbler 19.4 1.1 18.2
Grey Wagtail 19.0 16.3 2.7
House Martin 17.8 20.9 -3.1
Sedge Warbler 17.7 15.7 2.0
Wheatear 16.9 16 0.9
Water Rail 16.7 14.2 2.5
Snipe 15.8 16.2 -0.4
Shoveler 14.9 26.4 -11.5
Little Grebe 12.9 4.2 8.7
Rock Pipit 12.4 7.7 4.7
Willow Warbler 11.5 17.2 -5.7
House Sparrow 11.4 10.3 1.1
Swift 10.2 13.7 -3.5
Black-tailed Godwit 9.9 13.2 -3.3
Grey Plover 9.1 7.9 1.2
Whimbrel 9.1 8.2 0.9
Sand Martin 8.8 8.1 0.7
Gadwall 8.7 3.2 5.5
Mistle Thrush 8.3 8 0.3
Siskin 7.2 5.5 1.7
Common Sandpiper 6.2 6.8 -0.6
Yellow Wagtail 5.9 5.4 0.5
Bar-tailed Godwit 5.5 5.1 0.4
Cuckoo 5.5 5.4 0.1
Yellowhammer 5.1 8.4 -3.3
Lesser Redpoll 4.8 3.6 1.2
Knot 3.7 6.6 -3.1
Mediterranean Gull 3.1 5.7 -2.6
Treecreeper 3.1 3.9 -0.8
Black Redstart 3.1 1.6 1.5
       
Pintail 2.2 5.3 -3.1
Little Owl 2.1 6.5 -4.4

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Last revised: 2 December 2017.