Grebe białoczuby (Rollandia rolland) - the bird species of the family grebes (Podicipedidae) was described in 1824. This species inhabits lowland regions, the southern part of South America, high-altitude lakes in the Andes (called Lake Puna) to a height of 3500-4500 m asl and area of the Pacific coast of Peru. There are numerous species in the marshes, ponds and shallow lakes. Prefers wetlands with a diverse ecosystem. The area should be characterized by areas covered with reeds, duckweed, and the surface free of aquatic vegetation. Outside the breeding season usually occurs in quite a number of herds. During the breeding season is typically territorial species. The nests are usually two eggs. Legi can be done at any time of year, if only to favorable conditions.
Currently, three subspecies are known grebe białoczubego [3]:
Chilean Grebe (Rollandia rolland chilensis) - described in 1828. Living in coastal areas and upland areas of Peru from Peru to northwestern Argentina. In addition, lowland areas of the Andes from Argentina to Chile, and in the winter and during migration from Paraguay to southern Brazil. Chilean grebe abundance reaches 100 000 individuals across its area of distribution.
Grebe Morrison [citation needed] (Rollandia rolland Morrison) - described in 1962. Inhabits areas of Lake Junin in Peru. According to some studies, this subspecies is characterized by a more robust beak, in comparison with the subspecies living in lowland areas. Morrison unfortunately grebe abundance decreases steadily from 4000 individuals in 1977 through 2150 in 1981 to fewer than 500 individuals in 1995. It is the only subspecies of grebe białoczubego, located in the Red Book of Endangered Species and classified as endangered.
Grebe białoczuby (Rollandia rolland rolland) - described in 1824. This subspecies is characteristic only for the Falkland Islands, where it is very large. Differs from sub-species of South American continent, mainly the size (eg twice the Chilean grebe), so by some scholars even considered a separate species. Its size is about 10 000 individuals. Its population is considered stable and fairly large, although there is a risk due to a small area of occurrence.
Grebe białoczuby (Rollandia rolland) - the bird species of the family grebes (Podicipedidae) was described in 1824. This species inhabits lowland regions, the southern part of South America, high-altitude lakes in the Andes (called Lake Puna) to a height of 3500-4500 m asl and area of the Pacific coast of Peru. There are numerous species in the marshes, ponds and shallow lakes. Prefers wetlands with a diverse ecosystem. The area should be characterized by areas covered with reeds, duckweed, and the surface free of aquatic vegetation. Outside the breeding season usually occurs in quite a number of herds. During the breeding season is typically territorial species. The nests are usually two eggs. Legi can be done at any time of year, if only to favorable conditions.
Currently, three subspecies are known grebe białoczubego [3]:
Chilean Grebe (Rollandia rolland chilensis) - described in 1828. Living in coastal areas and upland areas of Peru from Peru to northwestern Argentina. In addition, lowland areas of the Andes from Argentina to Chile, and in the winter and during migration from Paraguay to southern Brazil. Chilean grebe abundance reaches 100 000 individuals across its area of distribution.
Grebe Morrison [citation needed] (Rollandia rolland Morrison) - described in 1962. Inhabits areas of Lake Junin in Peru. According to some studies, this subspecies is characterized by a more robust beak, in comparison with the subspecies living in lowland areas. Morrison unfortunately grebe abundance decreases steadily from 4000 individuals in 1977 through 2150 in 1981 to fewer than 500 individuals in 1995. It is the only subspecies of grebe białoczubego, located in the Red Book of Endangered Species and classified as endangered.
Grebe białoczuby (Rollandia rolland rolland) - described in 1824. This subspecies is characteristic only for the Falkland Islands, where it is very large. Differs from sub-species of South American continent, mainly the size (eg twice the Chilean grebe), so by some scholars even considered a separate species. Its size is about 10 000 individuals. Its population is considered stable and fairly large, although there is a risk due to a small area of occurrence.