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 […]

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 […]

Great Blue Heron (Ardea herodias) Science Article 9 abstract Encounters between predator and prey commonly leadto the death of the prey species; accidental deaths ofthe predator are believed to be relatively rare. Here wereport two cases of Great Blue Heron (Ardea herodias)mortality involving the Pacific lamprey (Entosphenustridentata) in Alviso, California. BLAIR 0. WOLF and STEPHANIE […]

Great Blue Heron (Ardea herodias) Science Article 5 abstract Selection of an appropriate species isa key element of effective ecological risk assessments(ERA), especially when site-specific fieldstudies are to be employed. Great blue herons(GBH) possess several ideal characteristics of areceptor species for the assessment of bioaccumulativecompounds in the environment. Rita Marie Seston, Matthew John Zwiernik ET […]

Great Blue Heron (Ardea herodias) Science Article 7 abstract A comparison of the accuracy of different techniques for counting Great Blue Heron (Ardea herodias) nests suggests that aerial-visual estimates and aerial photographic counts provide reliable measures of colony size while minimizing disturbance to nesting herons. Additionally, post-nesting season ground counts of nests provide a suitable, […]

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 […]

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 […]

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 […]

Great Blue Heron (Ardea herodias) Science Article 4 abstract Patterns of foraging trips of several species of colonially nesting birdshave been examined recently for evidence that colonies serve as ‘informationcentres’ to assist the members in finding food (Krebs 1974, Hooglandand Sherman 1976, Snapp 1976, Custer and Osborn 1978, Erwin1978). According to this hypothesis colonial nesting […]

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)