This shows rare species in Tanzania with 5 or less observations. If YOU have seen one of them please tell us when and where!
| Britton no | species | ||
| 6 | 1 | Jouanin's Petrel | |
| 15 | 1 | Brown Booby | |
| 16 | 1 | Red-footed Booby | |
| 273 | 1 | Long-toed Stint | |
| 302 | 1 | Long-tailed Skua | |
| 308 | 1 | Slender-billed Gull | |
| 319 | 1 | Black Tern | |
| 421 | 1 | Sokoke Scops Owl | |
| 428 | 1 | Long-tailed Nightjar | |
| 511 | 1 | White-thighed Hornbill | |
| 711 | 1 | Joyful Greenbul | |
| 923 | 1 | White-browed Crombec | |
| 9001 | 1 | Shy Albatross | |
| 9005 | 1 | Black-naped Tern | |
| 9082 | 1 | Black-collared Eremomela | |
| 9086 | 1 | Masked Shrike | |
| 9087 | 1 | Rubeho Sunbird | |
| 9090 | 1 | Black-bellied Storm Petrel | |
| 9092 | 1 | Wedge-tailed Shearwater | |
| 9096 | 1 | Wilson's Storm Petrel | |
| 9097 | 1 | Great Skua | |
| 9098 | 1 | Cape Gull | |
| 37 | 2 | Western Reef Heron | |
| 74 | 2 | Tufted Duck | |
| 141 | 2 | Swallow-tailed Kite | |
| 192 | 2 | Black-rumped Button Quail | |
| 209 | 2 | Striped Flufftail | |
| 212 | 2 | Long-toed Flufftail | |
| 251 | 2 | Black-headed Plover | |
| 269 | 2 | Red Knot | |
| 303 | 2 | Arctic Skua | |
| 842 | 2 | Papyrus Yellow Warbler | |
| 877 | 2 | Yellow-vented Eremomela | |
| 1063 | 2 | Chestnut-winged Starling | |
| 1093 | 2 | Orange-tufted Sunbird | |
| 1247 | 2 | White-breasted Negrofinch | |
| 1252 | 2 | Red-fronted Ant-pecker | |
| 9002 | 2 | Giant Petrel | |
| 9071 | 2 | Cape Shoveler | |
| 9094 | 2 | Malagasy Heron | |
| 108 | 3 | Eurasian Sparrowhawk | |
| 157 | 3 | Barbary Falcon | |
| 266 | 3 | Jack Snipe | |
| 304 | 3 | Pomarine Skua | |
| 440 | 3 | Standard-winged Nightjar | |
| 446 | 3 | Forbes-Watson's Swift | |
| 533 | 3 | Grey-throated Barbet | |
| 676 | 3 | Mountain Illadopsis | |
| 684 | 3 | Brown Babbler | |
| 926 | 3 | Sooty Flycatcher | |
| 959 | 3 | Yellow-bellied Wattle-eye | |
| 1234 | 3 | Black-rumped Waxbill | |
| 9020 | 3 | Angola Lark | |
| 9023 | 3 | Jackson's Pipit | |
| 9043 | 3 | Southern Black Tit | |
| 73 | 4 | Northern Pochard | |
| 103 | 4 | Levant Sparrowhawk | |
| 191 | 4 | Quail Plover | |
| 638 | 4 | Mascarene Martin | |
| 956 | 4 | Shrike Flycatcher | |
| 1097 | 4 | Blue-throated Brown Sunbird | |
| 1174 | 4 | Black-billed Weaver | |
| 9013 | 4 | European Scops Owl | |
| 9083 | 4 | Rubeho Akalat |
