Fifteen bones (3 coracoids, 5 humeri, 2 ulnae, carpometacarpus, femur, 3 tibiotarsi) were referred to Podiceps occipitalis rather than to Rollandia rolland because of their much larger size, and rather than to R.
Although not recorded from the Taraco Peninsula in 1996, Podiceps occipitalis breeds on nearby freshwater lakes and is a common nonbreeding visitor to Lake Titicaca.
those of some other altiplano sites is the apparent scarcity on the former of some conspicuous aquatic or semi-aquatic species, such as Podiceps occipitalis, Phalacrocorax brasilianus, Theristicus melanopis, Chloephaga melanoptera, and Fulica gigantea.
Making up 24% of the entire species assemblage and 13% of the 620 bones identified to species (Table 1), these birds include six aquatic or semi-aquatic species (a grebe Podiceps occipitalis, cormorant Phalacrocorax brasilianus, goose Chloephaga melanoptera, duck Lophonetta specularoides, and two coots Fulica gigantea, F.
bones Aechmophorus occidentalislclarki 3 Podilymbus podiceps
parvus 4 Pelecanus, cf.
Moult patterns and moult migration in the Black-necked Grebe, Podiceps nigricollis.
Ecology of migrant Black-necked Grebes, Podiceps nigricollis, at Mono Lake, California.
A comparable duet trilling is mostly absent from Podiceps species.
The new-described Diving ceremony appears like a simple precursor of the Discovery ceremony occurring in Podiceps species.
Antagonostic and heterosexual behaviour of the Homed Grebe, Podiceps auritus.
Comparative studies of behaviour in allopatric subspecies of grebes, Podicipedidae: Black-necked Grebe Podiceps
nigricollis (Brehm 1831) and White-tufted Grebe Rollandia rolland (Quoy & Gaimard 1824).
Some behaviour patterns of four closely related grebes, Podiceps nigricollis, P.
Observations on diving times, on pre-migratory restlessness and on some displays of Silvery Grebes Podiceps occipitalis.
Moult patterns and molt migration in the Black-necked Grebe Podiceps
bartletti Grebes Podicipedidae Least Grebe Tachybaptus dominicus Pied-billed Grebe Podilymbus podiceps
Herons Ardeidae Striated Heron Butorides striata Rufescent Tiger Heron Tigrisoma lineatum Ducks/Geese/Swans Anatidae Blue-winged Teal Anas discors Masked Duck Nomonyx dominicus Kites/Hawks/Eagles Accipitridae Grey-headed Kite Leptodon cayanensis Swallow-tailed Kite Elanoides forficatus Double-toothed Kite Harpagus bidentatus Plumbeous Kite Ictinia plumbea Bicolored Hawk Accipiter bicolor Black-faced Hawk Leucopternis melanops White Hawk L.