This is the pinnacle. The apex. The summit. Well...truth be told its actually just the complete sitelist for WALBOC since roughly 1960. So, apex, summit, pinnacle was really a bit of an understatement.
*Denotes only one sighting
1. Mute Swan
2. Bewick's Swan*
3. Greylag Goose
4.Canada Goose
5. Egyptian Goose
6. Shelduck
7. Mandarin
8. Wigeon
9. Gadwall
10. Teal
11. Mallard
12. Garganey
13. Shoveler
14. Red-crested Pochard
15. Pochard
16. Tufted Duck
17. Goldeneye*
18. Red-breasted Merganser*
19. Goosander
20. Ruddy Duck
21. Red-legged Partridge
22. Grey Partridge
23. Pheasant
24. Lady Amherst's Pheasant
25. Black-throated Diver*
26. Little Grebe
27. Great Crested Grebe
28. Black-necked Grebe*
29. Cormorant
30. Cattle Egret*
31. Great White Egret*
32. Grey Heron
33. Common Kestrel
34. Merlin
35. Hobby
36. Peregrine
37. Osprey
38. Honey Buzzard
39. Red Kite
40. Marsh Harrier
41. Sparrowhawk
42. Common Buzzard
43. Water Rail
44. Moorhen
45. Common Coot
46. Northern Lapwing
47. Golden Plover
48. Little Ringed Plover
49. Woodcock
50. Jack Snipe
51. Common Snipe
52. Curlew
53. Greenshank*
54. Green Sandpiper
55. Common Sandpiper
56. Common Gull
57. Greater Black-backed Gull
58. Herring Gull
59. Yellow-legged Gull*
60. Lesser Black-backed Gull
61. Mediterranean Gull
62. Common Tern
63. Feral Pigeon
64. Stock Dove
65. Woodpigeon
66. Turtle Dove
67. Collared Dove
68. Ring-necked Parakeet
69. Common Cuckoo
70. Barn Owl
71. Tawny Owl
72. Little Owl
73. Short-eared Owl*
74. European Nightjar
75. Common Swift
76. Common Kingfisher
77. Lesser-spotted Woodpecker
78. Great-spotted Woodpecker
79. Green Woodpecker
80. Golden Oriole
81. Eurasian Jay
82. Common Magpie
83. Eurasian Jackdaw
84. Rook
85. Carrion Crow
86. Raven
87. Waxwing
88. Great Tit
89. Blue Tit
90. Coal Tit
91. Marsh Tit
92. Willow Tit
93. Sand Martin
94. Swallow
95.House Martin
96. Long-tailed Tit
97. Woodlark
98. Skylark
99. Grasshopper Warbler
100. Sedge Warbler
101. Reed Warbler
102. Willow Warbler
103. Chiffchaff
104. Wood Warbler
105. Blackcap
106. Garden Warbler
107. Lesser Whitethroat
108. Common Whitethroat
109. Dartford Warbler
110. Firecrest
111. Goldcrest
112. Wren
113. Nuthatch
114. Treecreeper
115. Ring Ouzel
116. Starling
117. Blackbird
118. Fieldfare
119. Redwing
120. Mistle Thrush
121. Song Thrush
122. Robin
123. Common Nightingale
124. Black Redstart
125. Common Redstart
126. Whinchat
127. Stonechat
128. Northern Wheatear
129. Spotted Flycatcher
130. Pied Flycatcher
131. House Sparrow
132. Tree Sparrow
133. Dunnock
134. Yellow Wagtail
135. Grey Wagtail
136. Pied Wagtail
137. Meadow Pipit
138. Tree Pipit
139. Chaffinch
140. Brambling
141. Greenfinch
142. Siskin
143. Goldfinch
144. Lesser Redpoll
145. Mealy Redpoll
146. Common Linnet
147. Common Crossbill
148. Eurasian Bullfinch
149. Hawfinch
150. Corn Bunting
151. Yellowhammer
152. Reed Bunting