Species - Land Birds

The work of Biosfera 1 with land birds consist in monitoring, ringing and the collecting of biometric datas (wing, nozzle, weight and tarsus).




Raso Lark Alauda razae (Alexander, 1898)

Land Bird

Global Distribution: It exists only in the Raso islet, although it has historically occupied in the past on the islands of Santo Antão, São Vicente and Santa Luzia.

Food: It feeds on small bulbs of perennial plants (Cyperus bulbosus ou  C. cadamosti) present in the sandy soil of the islet.

Threat Category: Critically endangered.

Threats to Conservation: Although adapted to the desert environment, their populations fluctuate drastically in response to seasonal rains. In the year of 2004 the numbers of the individuals reduced drastically, and only in 2010 they increase to more than 200. Their terrestrial nests are naturally predatory by the Giant Wall Gecko from Raso (Tarentola gigas gigas), another species endemic to the islet, which is particularly high in some years.




Osprey Pandion haliaetus  (Linnaeus, 1758)

Land Bird

Global Distribution: It is found in several countries, in the following continents: Africa, Asia, America, Europe and Oceania.

Food: Almost all of their diet consists of live fish.

Threat Category: Least concern.

Threats to Conservation: Human exploration; use of pesticide; development of wind energy.








Cape Verde Passer iagoensis  (Gould, 1838)

Land Bird

Global Distribution: Endemic species of Cape Verde.

Food: Seed predators.

Threat Category: Least concern.

Threats to Conservation: Unknown.