Great Blue Heron (Ardea herodias) Science Article 1 abstract Seventeen Great Blue Heronries were surveyed in nine counties of northeast Ohio during the1993 breeding season to determine nest site characteristics. Herons nested in 15 species of deciduoustrees, selecting the taller trees at each site. Crown integrity was not a requisite for tree usage; repaired(reoccupied) nests […]
Tag: all of Ardea
Nest Site Characteristics of Great Blue Herons (Ardea herodias) inNortheast Ohio
Great Blue Heron (Ardea herodias) Science Article 1 abstract Seventeen Great Blue Heronries were surveyed in nine counties of northeast Ohio during the1993 breeding season to determine nest site characteristics. Herons nested in 15 species of deciduoustrees, selecting the taller trees at each site. Crown integrity was not a requisite for tree usage; repaired(reoccupied) nests […]
Predation of Eared Grebe by Great Blue Heron
Great Blue Heron (Ardea herodias) Science Article 10 abstract Great Blue Herons (Ardea herodias)typically prey upon fish and other aquatic organisms,and they occasionally take small mammals and birds.We observed a Great Blue Heron attack, kill, and attemptto consume an Eared Grebe (Podiceps nigricollis).The heron was unable to swallow the grebe, andit abandoned the carcass after […]
Eustrongylides and Pesticide Levels in a Great Blue Heron Shot in Wisconsin
Great Blue Heron (Ardea herodias) Science Article 11 abstract The parasitic roundworm, Eustrongylides ignotus [agersk , has been known to cause mortalit y and morbidity in members of the heron family in the eastern states of North America. To date no previous records exist for this nematode in Wisconsin. D . M . Swinefordi, Patuxent […]
Evidence from nature: interspecies spread of heronhepatitis B viruses
Great Blue Heron (Ardea herodias) Science Article 8 abstract Heron hepatitis B viruses (HHBVs) in three subspecies of free-living great blue herons(Ardea herodias) from Florida, USA, were identified and characterized. Eight of 13 sampleswere positive in all assays used, whereas sera from egrets, which are also members of the familyArdeidae, were negative in the same […]
Retrobulbar teratoma in a great blue heron (Ardea herodias)
Great Blue Heron (Ardea herodias) Science Article 2 abstract At presentation to the Vermont Institute of Natural Science,an adult female great blue heron (Ardea herodias) hadunilateral exophthalmos. The bird was subsequently euthanatizedand submitted to the Tufts University School of VeterinaryMedicine Wildlife Clinic. Scott H. Schelling, J Vet Diagn Invest 6:514-516 (1994) Download article download full […]
Factors Influencing Great Blue Heron Nesting Productivityon the Pacific Coast of Canada from 1998 to 1999
Great Blue Heron (Ardea herodias) Science Article 12 abstract Surveys were conducted at 35 Great Blue Heron (Ardea herodias) colonies in urban and rural landscapes of south-coastal British Columbia, Canada, to investigate low nesting productivity during 1998 and 1999 compared to a decade ago. Nesting failure was common (59% of 1,247 nests) and widespread (in […]
‘PRACTICE’ FORAGING BY A SUB-ADULT GREAT BLUE HERON
Great Blue Heron (Ardea herodias) Science Article 13 abstract ‘Play’, including ‘practice’ aggression and foraging, has been reported in at least 14orders of birds (Fagen 1981), and is thus a widespread, if relatively rare, behavior amongbirds. I report here on observations of practice foraging behavior (considered a categoryof play) by a sub-adult Great Blue Heron […]
REPRODUCTIVE SUCCESS OF GREAT BLUE HERONS(ARDIA HERODIAS) NESTING IN SWANSON CREEK, MARYLANDDURING THE CHALK POINT OIL SPILL
Great Blue Heron (Ardea herodias) Science Article 6 abstract On April 7, 2000, approximately 126,000 gallons of a mixture of #2 and #6 fuel oil were released froma break in a pipeline providing fuel to the Chalk Point Generating Station. The pipeline is owned by thePotomac Electric Power Company (PEPCO) and operated by Support Terminal […]
aerial plunge foraging by a Great Blue Heron
Great Blue Heron (Ardea herodias) Science Article 3 abstract This report describes the environmental contextand behavior of a single Great Blue Heron that repeatedly used plunging (Kushlan 1973a)as a foraging technique. STEVEN R . MOREY and ALLAN SMITS, Wilson Bull., 99(2), 1987, pp. 293-294 Download article download full text (pdf)