Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Emil K. Urban"'
Autor:
Emil K. Urban, T. G. Jefford
Publikováno v:
Ibis. 119:524-528
Autor:
R. M. Baxter, Emil K. Urban
Publikováno v:
Ibis. 112:336-339
Summary The yellow or orange-brown colour on the breast feathers and to a lesser extent on other feathers of the Great White Pelican in a breeding colony on an island in Lake Shala, Ethiopia, is due to the presence of ferric oxide. The feathers most
Autor:
Emil K. Urban
Publikováno v:
Ibis. 116:263-277
Summary Data are based on more than 200 h of observation at Ethiopia's Lake Shala from 1966 to 1972. Except for differences in size of bill, there are no useful field characters separating male and female Sacred Ibis. The breeding plumage is describe
THE BREEDING BIOLOGY OF THE GREAT WHITE PELICAN PELECANUS ONOCROTALUS ROSEUS AT LAKE SHALA, ETHIOPIA
Autor:
Emil K. Urban, Leslie Brown
Publikováno v:
Ibis. 111:199-237
Summary. Pelecanus onocrotalus roseus is known to breed more or less regularly in Africa at Lake Shala, Ethiopia; Lake Rukwa, Tanzania; St. Lucia Bay, Natal; Abou Tougour, Chad; Kapsikis, Northern Cameroons; and Wase Rock, Nigeria; and has been obser
Autor:
Michel Louette, Emil K. Urban
Publikováno v:
Ostrich: Journal of African Ornithology; Vol 78, No 2 (2007); xiii-xxiv
This paper gives an overview of all Pan-African Ornithological Congresses (PAOCs) held through to 2004. Comments are made on topics covered in each Congress in terms of science, conservation and stimulus for ornithology in Africa. Comments are also m
Publikováno v:
Bulletin of the African Bird Club. 11:59-66
Autor:
Emil K. Urban
Publikováno v:
The Auk. 124:1104-1106
The following critiques express the opinions of the individual evaluators regarding the strengths, weaknesses, and value of the books they review. As such, the appraisals are subjective assessments and do not necessarily reflect the opinions of the e
Autor:
Emil K. Urban
Publikováno v:
The Auk. 123:913-915
The following critiques express the opinions of the individual evaluators regarding the strengths, weaknesses, and value of the books they review. As such, the appraisals are subjective assessments and do not necessarily reflect the opinions of the e
Autor:
Emil K. Urban
Publikováno v:
The Auk. 122:1303-1305
The following critiques express the opinions of the individual evaluators regarding the strengths, weaknesses, and value of the books they review. As such, the appraisals are subjective assessments and do not necessarily reflect the opinions of the e
Autor:
Emil K. Urban, L. B. Davenport
Publikováno v:
Ostrich. 71:136-138
Davenport, L.B.Jr. & Urban, E.K. 2000. Time budgets for Captive Wattled Cranes Bugeranus carunculatus. Ostrich 71 (1 & 2):136-138. Time budgets for six pairs of captive Wattled Cranes were recorded in the years 1989–1991 at St. Catherine's Island,