Results 101 to 110 of about 312,952 (138)

Birds Baluran National Park

open access: yes, 2011
269 hal,;ill,;23 ...
Winnasis, Swiss dkk
core  

Commensal association of piscivorous birds with foraging otters in southeastern Brazil, and a comparison with such a relationship of piscivorous birds with cormorants

open access: yesJournal of Natural History, 2013
Associations of birds with foraging otters are restricted to four records in different regions of the world. We report herein on piscivorous birds associated with foraging otters (Lontra longicaudis) in a pool at an urban park in southeastern Brazil. We recorded up to ˜30 individuals of seven piscivorous bird species associated with a single otter. The
D, Giulia B., Angelo, Sazima, Ivan
core   +4 more sources

Pathogenicity of Clinostomum complanatum (Digenea: Clinostomidae) in piscivorous birds

Research in Veterinary Science, 2013
The present study is focused on the pathogenicity of a parasitic digenea, Clinostomum complanatum among dead piscivorous birds, collected after mass mortalities in northern Iran. A total of 126 birds (15 species) were examined for parasitic infections.
Pejman Mortazavi   +2 more
exaly   +3 more sources

FEEDING ECOLOGY OF PISCIVOROUS BIRDS AT LAKE ST LUCIA, PART 3: SWIMMING BIRDS

Ostrich, 1979
Summary Whitfield, A. K. & Blaber, S. J. M. 1978. Feeding ecology of piscivorous birds at Lake St Lucia, Part 3: Swimming birds. Ostrich 50:10-20. The diets, foraging periodicities and feeding behaviour of the Reed Cormorant Phalacrocorax africanus, Whitebreasted Cormorant Phalacrocorax carbo and White Pelican Pelecanus onocrotalus were studied at Lake
Alan Whitfield
exaly   +2 more sources

Piscivorous birds as top predators and fishery competitors in the lagoon ecosystem

Hydrobiologia, 2008
Piscivorous birds have received much attention with respect to competition with fisheries for resources. The majority of studies have been focused on cormorants Phalacrocoracidae, while predation by other piscivorous bird species has often been overlooked. This study was designed to supplement sociological research (Bell, 2004), which revealed that the
Žydelis, Ramūnas, Kontautas, Antanas
exaly   +2 more sources

FACTORS INFLUENCING THE ABUNDANCE OF PISCIVOROUS BIRDS ON LAKE KYLE, ZIMBABWE

Ostrich, 1987
Summary Junor, F. J. R. & Marshall, B. E. 1987. Factors influencing the abundance of piscivorous birds on Lake Kyle, Zimbabwe. Ostrich 58:168-175. A five-year census of fish-eating birds on Lake Kyle, Zimbabwe, revealed that eight species were present in significant numbers with the Reed Cormorant being the most abundant.
B E Marshall
exaly   +2 more sources

Asymmetric impact of piscivorous birds on size-structured fish populations

Canadian Journal of Zoology, 2006
Fish are frequently considered the top predator in freshwater food web models despite evidence that predatory birds can impact fish populations. In this study, we quantified bird predation rates on experimental populations of rainbow trout ( Oncorhynchus mykiss (Walbaum, 1792)) created by stocking nine small lakes in British Columbia, Canada ...
John Post   +2 more
exaly   +2 more sources

THE ABUNDANCE AND FOOD CONSUMPTION OF PISCIVOROUS BIRDS ON LAKE KARIBA, ZIMBABWE-ZAMBIA

Ostrich, 1996
Summary Hustler, K. & Marshall, B.E. 1996. The abundance and food consumption of piscivorous birds on Lake Kariba, Zimbabwe-Zambia. Ostrich 67:23-32. About 40 species of piscivorous birds have been recorded on Lake Kariba (Zimbabwe-Zambia) but only 26 were observed during this study, carried out in 1986–87.
B E Marshall
exaly   +2 more sources

Estimating Mercury Exposure of Piscivorous Birds and Sport Fish Using Prey Fish Monitoring

open access: yesEnvironmental Science & Technology, 2015
Methylmercury is a global pollutant of aquatic ecosystems, and monitoring programs need tools to predict mercury exposure of wildlife. We developed equations to estimate methylmercury exposure of piscivorous birds and sport fish using mercury concentrations in prey fish. We collected original data on western grebes (Aechmophorus occidentalis) and Clark'
Joshua T, Ackerman   +6 more
openaire   +3 more sources

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