Blockers - Frederikssund


Below you can choose between all rankings, including year rankings, municipality, etc.


Here you see the species, that are seen by the least amount of participators of the ranking. The definition of a blocker, is a species, that are ticked by max 10% of the participators of the ranking.

This page data is updated automatically a couple of times daily, that's why new ticks may take a while to be included in the results.

# Name Seen by (out of 2)
1 Marsh Tit (Poecile palustris) 1
2 Garganey (Spatula querquedula) 1
3 Thrush Nightingale (Luscinia luscinia) 1
4 Red-necked Grebe (Podiceps grisegena) 1
5 Little Gull (Hydrocoloeus minutus) 1
6 Common Kingfisher (Alcedo atthis) 1
7 Garden Warbler (Sylvia borin) 1
8 Common Goldeneye (Bucephala clangula) 1
9 Common Chaffinch (Fringilla coelebs) 1
10 Curlew Sandpiper (Calidris ferruginea) 1
11 Eurasian Bittern (Botaurus stellaris) 1
12 Eurasian Blue Tit (Cyanistes caeruleus) 1
13 Northern Shoveler (Spatula clypeata) 1
14 European Pied Flycatcher (Ficedula hypoleuca) 1
15 Great Crested Grebe (Podiceps cristatus) 1
16 Mediterranean Gull (Ichthyaetus melanocephalus) 1
17 Great Spotted Woodpecker (Dendrocopos major) 1
18 Lesser Whitethroat (Sylvia curruca) 1
19 Smew (Mergellus albellus) 1
20 Brambling (Fringilla montifringilla) 1
21 Temminck's Stint (Calidris temminckii) 1
22 Great Egret (Ardea alba) 1
23 Great Tit (Parus major) 1
24 Red-breasted Flycatcher (Ficedula parva) 1
25 Black-necked Grebe (Podiceps nigricollis) 1
26 Common Gull (Larus canus) 1
27 Common Kestrel (Falco tinnunculus) 1
28 Grey Partridge (Perdix perdix) 1
29 Common Whitethroat (Sylvia communis) 1
30 Common Merganser (Mergus merganser) 1
31 Hawfinch (Coccothraustes coccothraustes) 1
32 Sanderling (Calidris alba) 1
33 Little Egret (Egretta garzetta) 1
34 Eurasian Skylark (Alauda arvensis) 1
35 Common Redstart (Phoenicurus phoenicurus) 1
36 Eurasian Oystercatcher (Haematopus ostralegus) 1
37 Great Black-backed Gull (Larus marinus) 1
38 Merlin (Falco columbarius) 1
39 Common Pheasant (Phasianus colchicus) 1
40 Goldcrest (Regulus regulus) 1
41 Red-breasted Merganser (Mergus serrator) 1
42 Eurasian Bullfinch (Pyrrhula pyrrhula) 1
43 Dunlin (Calidris alpina) 1
44 Western Osprey (Pandion haliaetus) 1
45 Sand Martin (Riparia riparia) 1
46 Whinchat (Saxicola rubetra) 1
47 Pied Avocet (Recurvirostra avosetta) 1
48 European Herring Gull (Larus argentatus) 1
49 Gyrfalcon (Falco rusticolus) 1
50 Brant Goose (Branta bernicla) 1
51 Eurasian Wren (Troglodytes troglodytes) 1
52 Ruddy Duck (Oxyura jamaicensis) 1
53 European Greenfinch (Chloris chloris) 1
54 Purple Sandpiper (Calidris maritima) 1
55 European Honey Buzzard (Pernis apivorus) 1
56 Barn Swallow (Hirundo rustica) 1
57 Northern Pintail (Anas acuta) 1
58 Northern Wheatear (Oenanthe oenanthe) 1
59 Northern Lapwing (Vanellus vanellus) 1
60 Lesser Black-backed Gull (Larus fuscus) 1
61 Peregrine Falcon (Falco peregrinus) 1
62 Red-breasted Goose (Branta ruficollis) 1
63 Eurasian Nuthatch (Sitta europaea) 1
64 Common Swift (Apus apus) 1
65 Twite (Linaria flavirostris) 1
66 Little Stint (Calidris minuta) 1
67 Jack Snipe (Lymnocryptes minimus) 1
68 Eurasian Sparrowhawk (Accipiter nisus) 1
69 Common House Martin (Delichon urbicum) 1
70 House Sparrow (Passer domesticus) 1
71 European Golden Plover (Pluvialis apricaria) 1
72 Caspian Tern (Hydroprogne caspia) 1
73 Red-backed Shrike (Lanius collurio) 1
74 Canada Goose (Branta canadensis) 1
75 Eurasian Treecreeper (Certhia familiaris) 1
76 Common Cuckoo (Cuculus canorus) 1
77 Common Linnet (Linaria cannabina) 1
78 Common Redpoll (Acanthis flammea) 1
79 Common Snipe (Gallinago gallinago) 1
80 Northern Goshawk (Accipiter gentilis) 1
81 Long-tailed Tit (Aegithalos caudatus) 1
82 Green-winged Teal (Anas carolinensis) 1
83 Eurasian Tree Sparrow (Passer montanus) 1
84 Grey Plover (Pluvialis squatarola) 1
85 Sandwich Tern (Thalasseus sandvicensis) 1
86 Great Grey Shrike (Lanius excubitor) 1
87 Barnacle Goose (Branta leucopsis) 1
88 Rock Dove (Columba livia) 1
89 Red Crossbill (Loxia curvirostra) 1
90 Red-necked Phalarope (Phalaropus lobatus) 1
91 Western Marsh Harrier (Circus aeruginosus) 1
92 Willow Warbler (Phylloscopus trochilus) 1
93 Red-crested Pochard (Netta rufina) 1
94 Dunnock (Prunella modularis) 1
95 Common Ringed Plover (Charadrius hiaticula) 1
96 Little Tern (Sternula albifrons) 1
97 Eurasian Jay (Garrulus glandarius) 1
98 Ring Ouzel (Turdus torquatus) 1
99 Stock Dove (Columba oenas) 1
100 Common Wood Pigeon (Columba palumbus) 1
101 Two-barred Crossbill (Loxia leucoptera) 1
102 Common Sandpiper (Actitis hypoleucos) 1
103 Hen Harrier (Circus cyaneus) 1
104 Common Chiffchaff (Phylloscopus collybita) 1
105 Common Pochard (Aythya ferina) 1
106 Western Yellow Wagtail (Motacilla flava) 1
107 Little Ringed Plover (Charadrius dubius) 1
108 Common Tern (Sterna hirundo) 1
109 Taiga Bean Goose (Anser fabalis) 1
110 Common Blackbird (Turdus merula) 1
111 Fieldfare (Turdus pilaris) 1
112 Eurasian Collared Dove (Streptopelia decaocto) 1
113 European Goldfinch (Carduelis carduelis) 1
114 Green Sandpiper (Tringa ochropus) 1
115 Red Kite (Milvus milvus) 1
116 Sedge Warbler (Acrocephalus schoenobaenus) 1
117 Tufted Duck (Aythya fuligula) 1
118 Grey Wagtail (Motacilla cinerea) 1
119 Eurasian Curlew (Numenius arquata) 1
120 Arctic Tern (Sterna paradisaea) 1
121 Tundra Bean Goose (Anser serrirostris) 1
122 Redwing (Turdus iliacus) 1
123 Water Rail (Rallus aquaticus) 1
124 Eurasian Siskin (Spinus spinus) 1
125 Common Redshank (Tringa totanus) 1
126 White-tailed Eagle (Haliaeetus albicilla) 1
127 Eurasian Reed Warbler (Acrocephalus scirpaceus) 1
128 Greater Scaup (Aythya marila) 1
129 White Wagtail (Motacilla alba) 1
130 Bar-tailed Godwit (Limosa lapponica) 1
131 White-winged Tern (Chlidonias leucopterus) 1
132 Greater White-fronted Goose (Anser albifrons) 1
133 Song Thrush (Turdus philomelos) 1
134 Common Moorhen (Gallinula chloropus) 1
135 Snow Bunting (Plectrophenax nivalis) 1
136 Wood Sandpiper (Tringa glareola) 1
137 Rough-legged Buzzard (Buteo lagopus) 1
138 Marsh Warbler (Acrocephalus palustris) 1
139 Common Eider (Somateria mollissima) 1
140 Meadow Pipit (Anthus pratensis) 1
141 Black-tailed Godwit (Limosa limosa) 1
142 Black Tern (Chlidonias niger) 1
143 Whooper Swan (Cygnus cygnus) 1
144 Mistle Thrush (Turdus viscivorus) 1
145 Eurasian Coot (Fulica atra) 1
146 Corn Bunting (Emberiza calandra) 1
147 Spotted Redshank (Tringa erythropus) 1
148 Common Buzzard (Buteo buteo) 1
149 Icterine Warbler (Hippolais icterina) 1
150 Velvet Scoter (Melanitta fusca) 1
151 Tree Pipit (Anthus trivialis) 1
152 Red Knot (Calidris canutus) 1
153 Common Murre (Uria aalge) 1
154 Northern Raven (Corvus corax) 1
155 Bohemian Waxwing (Bombycilla garrulus) 1
156 Egyptian Goose (Alopochen aegyptiaca) 1
157 European Robin (Erithacus rubecula) 1
158 Common Crane (Grus grus) 1
159 Yellowhammer (Emberiza citrinella) 1
160 Common Greenshank (Tringa nebularia) 1
161 Tawny Owl (Strix aluco) 1
162 Common Grasshopper Warbler (Locustella naevia) 1
163 Common Scoter (Melanitta nigra) 1
164 Water Pipit (Anthus spinoletta) 1
165 Ruff (Calidris pugnax) 1
166 Great Cormorant (Phalacrocorax carbo) 1
167 Coal Tit (Periparus ater) 1
168 Common Shelduck (Tadorna tadorna) 1
169 Bluethroat (Luscinia svecica) 1
170 Little Grebe (Tachybaptus ruficollis) 1
171 Common Reed Bunting (Emberiza schoeniclus) 1
172 Short-eared Owl (Asio flammeus) 1
173 Eurasian Blackcap (Sylvia atricapilla) 1
174 Long-tailed Duck (Clangula hyemalis) 1
175 Eurasian Rock Pipit (Anthus petrosus) 1
176 Broad-billed Sandpiper (Calidris falcinellus) 1
177 Eurasian Spoonbill (Platalea leucorodia) 1
Annoncer