Results 141 to 150 of about 3,181 (180)
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Incubation of Double-Crested Cormorant Eggs (Phalacrocorax auritus)
Colonial Waterbirds, 1996D. C. Powell +4 more
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Use of Artificial Eggs Reduces Double-Crested Cormorant (Phalacrocorax auritus) Fledging
Waterbirds, 2019Double-crested Cormorant (Phalacrocorax auritus) populations have rapidly grown across the United States. In some locations cormorant populations have become a management concern due to real or perceived effects on local fish populations, altering island vegetation, and displacing other colonial waterbirds.
Tanya M. Roerick, Steve A. Mortensen
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 1999
Heart rates were recorded from double-crested cormorant chicks during their first ever and subsequent voluntary head submergences and dives, as well as during longer dives made after the chicks were accustomed to diving. Despite variation between chicks, the cardiac response to first ever and subsequent voluntary submergence (head submergences and ...
M R, Enstipp, R D, Andrews, D R, Jones
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Heart rates were recorded from double-crested cormorant chicks during their first ever and subsequent voluntary head submergences and dives, as well as during longer dives made after the chicks were accustomed to diving. Despite variation between chicks, the cardiac response to first ever and subsequent voluntary submergence (head submergences and ...
M R, Enstipp, R D, Andrews, D R, Jones
openaire +2 more sources
Environmental Toxicology and Chemistry, 1996
Abstract To test an association between environmental contaminants and the prevalence of congenital anomalies in colonial waterbirds, we collected representative eggs for chemical analysis from double-crested cormorant nests at colonies in Lake Michigan, Wisconsin, USA, and Lake Winnipegosis, Manitoba, Canada, and periodically revisited ...
Jill M. Larson +8 more
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Abstract To test an association between environmental contaminants and the prevalence of congenital anomalies in colonial waterbirds, we collected representative eggs for chemical analysis from double-crested cormorant nests at colonies in Lake Michigan, Wisconsin, USA, and Lake Winnipegosis, Manitoba, Canada, and periodically revisited ...
Jill M. Larson +8 more
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Two New Species of Helminths from the Cormorant, Phalacrocorax auritus
The Journal of Parasitology, 1950On November 17, 1947, two cormorants, Phalacrocorax auritus, were sent to Dr. Lyell J. Thomas for study. These birds were shot five miles northwest of Grafton, Illinois on the Illinois River and brought over by Dr. H. B. Mills, Chief of the Illinois State Natural History Survey. With the permission of Dr.
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Comparing Bioenergetics Models of Double-Crested Cormorant (Phalacrocorax auritus) Fish Consumption
Waterbirds, 2012Abstract. Double-crested Cormorants (Phalacrocorax auritus) began to recolonize Leech Lake, Minnesota, in the 1990s and reached 2,524 breeding pairs before control measures started in 2005. Walleye (Sander vitreus) recruitment concurrently declined, creating concern in the local community.
Özge Göktepe +3 more
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DIET OF DOUBLE-CRESTED CORMORANTS (PHALACROCORAX AURITUS) WINTERING ON THE CENTRAL TEXAS COAST
The Southwestern Naturalist, 2004Abstract Diets of double-crested cormorants (Phalacrocorax auritus) wintering on the central Texas coast were determined from the contents of 51 stomachs from Lavaca Bay and 28 stomachs from upper Laguna Madre. Diets consisted primarily of striped mullet (Mugil cephalus) and Gulf menhaden (Brevoortia patronus) in Lavaca Bay and striped mullet and Gulf ...
Kim Withers, Tammy S. Brooks
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2009
Maternal investment of yolk and albumen in avian eggs varies with egg mass and contributes to variation in hatchling mass. Here we use the natural variation in mass and composition of Double-crested Cormorant (Phalacrocorax auritus) eggs to examine consequences of variation in yolk and albumen mass on hatchling phenotype.
Edward M, Dzialowski +2 more
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Maternal investment of yolk and albumen in avian eggs varies with egg mass and contributes to variation in hatchling mass. Here we use the natural variation in mass and composition of Double-crested Cormorant (Phalacrocorax auritus) eggs to examine consequences of variation in yolk and albumen mass on hatchling phenotype.
Edward M, Dzialowski +2 more
openaire +2 more sources
Journal of Zoo and Wildlife Medicine, 2002
Outbreaks of morbidity and mortality in double-crested cormorants (Phalacrocorax auritus) along Florida's Gulf Coast have occurred sporadically for at least 30 yr. During these outbreaks, the Clinic for the Rehabilitation of Wildlife, located on Sanibel Island in Florida, has admitted a substantial number of cormorants with consistent presentation of ...
Christine, Kreuder +6 more
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Outbreaks of morbidity and mortality in double-crested cormorants (Phalacrocorax auritus) along Florida's Gulf Coast have occurred sporadically for at least 30 yr. During these outbreaks, the Clinic for the Rehabilitation of Wildlife, located on Sanibel Island in Florida, has admitted a substantial number of cormorants with consistent presentation of ...
Christine, Kreuder +6 more
openaire +2 more sources