A significant proportion of the population of each of half a dozen Western Palearctic bird species, that could easily become extinct within thirty or forty years, spend a sizeable part of their annual cycle in Tanzania.
The six species of particular concern are: (Endangered) Basra Reed Warbler; (Vulnerable) Lesser Kestrel; (Near threatened) Pallid Harrier, Corncrake, Black-tailed Godwit and European Roller.
tanzaniabirdatlas.com is the official site for the Tanzania Bird Atlas project.
"...is not just about mapping the distribution of birds in Tanzania. By collecting data on a monthly basis and concentrating on evidence of breeding we hope to understand much more about the seasonality of our birdlife. It is sometimes difficult for people unfamiliar with the tropics to understand how different animal and plant life cycles can be without the all pervasive effect of a harsh winter."