Prefectures covered：Ibaraki, Chiba, Tokyo
OSJ7
Number of orders recorded： 12
Number of families recorded： 29
Number of genera recorded： 48
Number of species recorded： 80
Observed species (native species)#
- Gadwall (Anas strepera)
- Eurasian Wigeon (Anas penelope)
- Mallard (Anas platyrhynchos)
- Eastern Spot-billed Duck (Anas zonorhyncha)
- Northern Shoveler (Anas clypeata)
- Northern Pintail (Anas acuta)
- Eurasian Teal (Anas crecca)
- Common Pochard (Aythya ferina)
- Tufted Duck (Aythya fuligula)
- Greater Scaup (Aythya marila)
- Common Goldeneye (Bucephala clangula)
- Smew (Mergellus albellus)
- Red-breasted Merganser (Mergus serrator)
- Little Grebe (Tachybaptus ruficollis)
- Red-necked Grebe (Podiceps grisegena)
- Great Crested Grebe (Podiceps cristatus)
- Black-necked Grebe (Podiceps nigricollis)
- Oriental Turtle Dove (Streptopelia orientalis)
- Pelagic Cormorant (Phalacrocorax pelagicus)
- Great Cormorant (Phalacrocorax carbo)
- Japanese Cormorant (Phalacrocorax capillatus)
- Grey Heron (Ardea cinerea)
- Great Egret (Ardea alba)
- Little Egret (Egretta garzetta)
- Eurasian Coot (Fulica atra)
- Northern Lapwing (Vanellus vanellus)
- Pacific Golden Plover (Pluvialis fulva)
- Grey Plover (Pluvialis squatarola)
- Long-billed Plover (Charadrius placidus)
- Kentish Plover (Charadrius alexandrinus)
- Eurasian Oystercatcher (Haematopus ostralegus)
- Black-winged Stilt (Himantopus himantopus)
- Common Snipe (Gallinago gallinago)
- Eurasian Curlew (Numenius arquata)
- Common Greenshank (Tringa nebularia)
- Green Sandpiper (Tringa ochropus)
- Wood Sandpiper (Tringa glareola)
- Common Sandpiper (Actitis hypoleucos)
- Sanderling (Calidris alba)
- Long-toed Stint (Calidris subminuta) New
- Dunlin (Calidris alpina)
- Black-headed Gull (Chroicocephalus ridibundus)
- Black-tailed Gull (Larus crassirostris)
- Glaucous Gull (Larus hyperboreus)
- Vega Gull (Larus vegae)
- Slaty-backed Gull (Larus schistisagus)
- Western Osprey (Pandion haliaetus)
- Black Kite (Milvus migrans)
- Eastern Marsh Harrier (Circus spilonotus)
- Eurasian Sparrowhawk (Accipiter nisus)
- Eastern Buzzard (Buteo japonicus)
- Common Kingfisher (Alcedo atthis)
- Japanese Pygmy Woodpecker (Yungipicus kizuki)
- Common Kestrel (Falco tinnunculus)
- Merlin (Falco columbarius)
- Bull-headed Shrike (Lanius bucephalus)
- Azure-winged Magpie (Cyanopica cyanus)
- Carrion Crow (Corvus corone)
- Large-billed Crow (Corvus macrorhynchos)
- Japanese Tit (Parus minor)
- Brown-eared Bulbul (Hypsipetes amaurotis)
- Japanese Bush Warbler (Horornis diphone)
- Japanese White-eye (Zosterops japonicus)
- Marsh Grassbird (Locustella pryeri)
- White-cheeked Starling (Spodiopsar cineraceus)
- Pale Thrush (Turdus pallidus)
- Brown-headed Thrush (Turdus chrysolaus)
- Dusky Thrush (Turdus eunomus)
- Daurian Redstart (Phoenicurus auroreus)
- Blue Rock Thrush (Monticola solitarius)
- Eurasian Tree Sparrow (Passer montanus)
- White Wagtail (Motacilla alba)
- Japanese Wagtail (Motacilla grandis)
- Olive-backed Pipit (Anthus hodgsoni)
- Water Pipit (Anthus spinoletta)
- Grey-capped Greenfinch (Chloris sinica)
- Meadow Bunting (Emberiza cioides)
- Rustic Bunting (Emberiza rustica)
- Black-faced Bunting (Emberiza spodocephala)
- Common Reed Bunting (Emberiza schoeniclus)
Observed species (introduced species)#
No data