| WeBS data for the Lea Valley 2000 | ||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Little Grebe | 31 |
29 |
41 |
50 |
3 |
1 |
5 |
14 |
64 |
73 |
47 |
46 |
| Red-necked Grebe | 1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Great crested grebe | 183 |
151 |
140 |
145 |
163 |
137 |
187 |
191 |
293 |
292 |
206 |
177 |
| Slavonian Grebe | 1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Black-necked Grebe | 5 |
2 |
8 |
9 |
0 |
0 |
0 |
5 |
13 |
20 |
14 |
14 |
| Cormorant | 216 |
132 |
93 |
539 |
586 |
473 |
469 |
350 |
283 |
297 |
213 |
218 |
| Grey Heron | 38 |
22 |
24 |
14 |
13 |
58 |
82 |
34 |
34 |
67 |
49 |
49 |
| Mute Swan | 166 |
86 |
142 |
157 |
155 |
205 |
211 |
191 |
188 |
208 |
159 |
146 |
| Greylag | 82 |
77 |
65 |
102 |
74 |
71 |
39 |
1 |
84 |
96 |
62 |
63 |
| Canada Goose | 486 |
690 |
581 |
649 |
572 |
953 |
1042 |
216 |
659 |
326 |
428 |
523 |
| Barnacle Goose | 12 |
6 |
1 |
8 |
9 |
0 |
4 |
1 |
0 |
1 |
1 |
0 |
| Dark-bellied Brent Goose | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
10 |
0 |
0 |
| Egyptian Goose | 2 |
2 |
2 |
0 |
2 |
0 |
2 |
1 |
2 |
4 |
2 |
2 |
| Mandarin | 2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| Shelduck | 2 |
6 |
24 |
23 |
9 |
2 |
0 |
0 |
0 |
1 |
1 |
4 |
| Ruddy Shelduck | 1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Wigeon | 399 |
357 |
198 |
27 |
0 |
0 |
0 |
0 |
61 |
164 |
289 |
268 |
| Gadwall | 811 |
594 |
284 |
258 |
52 |
113 |
204 |
76 |
474 |
503 |
461 |
556 |
| Teal | 718 |
533 |
469 |
216 |
4 |
0 |
1 |
26 |
237 |
521 |
463 |
436 |
| Mallard | 778 |
706 |
603 |
491 |
470 |
470 |
511 |
507 |
844 |
931 |
914 |
933 |
| Pintail | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Garganey | 1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
| Shoveler | 176 |
238 |
130 |
119 |
4 |
0 |
13 |
83 |
310 |
517 |
181 |
211 |
| Red-crested Pochard | 2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| Pochard | 549 |
491 |
255 |
70 |
75 |
97 |
118 |
93 |
110 |
407 |
340 |
509 |
| Tufted Duck | 1759 |
1777 |
1389 |
1022 |
627 |
449 |
2996 |
3685 |
2038 |
2149 |
1724 |
1920 |
| Scaup | 2 |
2 |
2 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Goldeneye | 108 |
127 |
138 |
45 |
1 |
0 |
0 |
0 |
1 |
0 |
40 |
42 |
| Goosander | 37 |
50 |
27 |
1 |
0 |
0 |
0 |
0 |
0 |
5 |
7 |
13 |
| Red-breasted Merganser | 1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
3 |
0 |
0 |
| Smew | 17 |
18 |
3 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
| Ruddy Duck | 45 |
27 |
17 |
4 |
5 |
0 |
5 |
0 |
2 |
7 |
27 |
37 |
| White Headed Duck | 1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Water rail | 15 |
10 |
6 |
4 |
0 |
0 |
0 |
0 |
1 |
6 |
5 |
18 |
| Moorhen | 370 |
322 |
298 |
379 |
95 |
74 |
90 |
77 |
229 |
287 |
301 |
382 |
| Coot | 3184 |
2492 |
1592 |
947 |
733 |
898 |
1459 |
1511 |
3196 |
3644 |
3314 |
3121 |
| Oystercatcher | 0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| Little Ringed Plover | 0 |
0 |
0 |
8 |
0 |
2 |
3 |
0 |
0 |
0 |
0 |
0 |
| Ringed Plover | 0 |
0 |
0 |
0 |
1 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
| Golden Plover | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
21 |
0 |
0 |
| Grey Plover | 0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Lapwing | 181 |
130 |
6 |
6 |
5 |
23 |
112 |
132 |
126 |
204 |
256 |
397 |
| Little Stint | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| Curlew Sandpiper | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Pectoral Sandpiper | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Dunlin | 0 |
0 |
0 |
0 |
1 |
0 |
1 |
2 |
1 |
2 |
0 |
0 |
| Ruff | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Common Snipe | 41 |
56 |
30 |
20 |
12 |
0 |
0 |
0 |
46 |
108 |
87 |
90 |
| Jack Snipe | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
| Woodcock | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Black Tailed Godwit | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Whimbrel | 0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Curlew | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| Spotted Redshank | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Redshank | 4 |
1 |
1 |
9 |
3 |
1 |
3 |
0 |
0 |
3 |
0 |
0 |
| Greenshank | 0 |
0 |
0 |
0 |
0 |
0 |
4 |
8 |
0 |
1 |
0 |
0 |
| Common Sandpiper | 1 |
0 |
0 |
0 |
11 |
0 |
41 |
20 |
13 |
4 |
1 |
0 |
| Wood Sandpiper | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| Green Sandpiper | 6 |
2 |
7 |
2 |
0 |
1 |
2 |
1 |
6 |
5 |
2 |
2 |
| Turnstone | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Black Headed Gull | 582 |
736 |
304 |
19 |
16 |
17 |
146 |
553 |
731 |
1051 |
1623 |
1700 |
| Mediterranean Gull | 0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
| Little Gull | 0 |
0 |
0 |
0 |
6 |
0 |
0 |
0 |
2 |
22 |
0 |
0 |
| Common Gull | 101 |
48 |
12 |
1 |
0 |
0 |
2 |
12 |
24 |
50 |
296 |
263 |
| Lesser Black backed Gull | 6 |
11 |
8 |
2 |
4 |
7 |
16 |
35 |
59 |
243 |
528 |
26 |
| Herring Gull | 9 |
2 |
3 |
1 |
0 |
1 |
0 |
1 |
9 |
165 |
480 |
39 |
| Great Black backed Gull | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
15 |
2 |
2 |
5 |
1 |
| W. Yellow legged Gull | 2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
4 |
1 |
| Caspian Gull | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Herring x LBB Gull hybrid | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Kittiwake | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| Sandwich Tern | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
76 |
6 |
0 |
0 |
0 |
| Common Tern | 0 |
0 |
0 |
0 |
112 |
133 |
135 |
48 |
61 |
0 |
0 |
0 |
| Arctic Tern | 0 |
0 |
0 |
1 |
5 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
| Little Tern | 0 |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
0 |
0 |
||