APEM Ltd – EAOW Wintering Bird Surveys: Final Report 411732


3 RESULTS 3.1 Estuary


Over all surveys a total of 50 species of waterbird were recorded during the core and low tide counts; 50 of these in the core count sectors and 42 in the low tide sectors.


3.2 Core count sectors 3.2.1 Sector 1


A total of 35 species were recorded in Sector 1 between October 2011 and March 2012. Of these, 11 were wildfowl (mute swan, greylag goose, Canada goose, dark-bellied brent goose, shelduck, wigeon, gadwall, teal, mallard, pintail and common scoter), 14 were waders (oystercatcher, avocet, golden plover, grey plover, lapwing, dunlin, snipe, woodcock, black- tailed godwit, bar-tailed godwit, curlew, greenshank, redshank and green sandpiper) and five were gulls (black-headed gull, common gull, lesser black-backed gull, herring gull and great black-backed gull). The other five species included cormorant, little egret, grey heron, great crested grebe and water rail (Table 3.1).


Table 3.1 Monthly counts of each species recorded in Sector 1 (Figure 1.1). Counts in brackets indicate known underestimates. Counts in green text indicate those that exceed the 1% national (GB) threshold and counts in red indicate those that exceed the 1% international threshold in Holt et al. (2011)


Count of birds Species


Mute swan(b) Greylag goose Canada goose


Dark-bellied brent goose(a*, b, c) Shelduck(b) Wigeon(b) Gadwall Teal


Mallard Pintail(b)


Common scoter(d) Cormorant Little egret Grey heron


Great crested grebe Water rail


Oystercatcher


October 2011


19 -


27 8 9 - - -


5 - -


5 1 1 1 1 -


November 2011


-


250 38 5


29 - -


[10] 14 - -


4 1 1 - - -


9


December 2011


- - - -


20 - -


[8]


[19] - -


5 - - - - -


January 2012


2 - -


358 33 [5] -


[15] [23] - -


6 - - - - -


February 2012


- - -


1 59


[111] 12


[14] 24 1 2


1 2 - - -


March 2012


- - -


57 26 - - -


4 - -


2 - - - -


11


October 2012 – Final


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