Least Bittern (Ixobrychus exilis) Science Article 4 abstract Evidence for a partial prenuptial moult in the Little Bittern Ixobrychus minutus is reported for the firsttime, and is based on both live and museum specimens. The prenuptial moult, which is probablyundertaken in the African winter quarters shortly before the spring migration, involves body feathersand often some […]
Category: Ardeidae
Extra-pair copulations of Grey Herons nesting at high densities
Grey Heron (Ardea cinerea) Science Article 2 abstract The copulatory behaviour of Grey Heron Ardea cinerea was observed in a colony in Donana (SW Spain) during two years. A total of 262 pair copulation attempts (PCAs) and 39 extra-pair copulation attempts (EPCAs) (12.9% of all copulation attempts) were observed among 31 focal pairs. 84% of […]
Factors affecting the breeding success of the grey heron ( Ardea cinerea)in northern Poland
Grey Heron (Ardea cinerea) Science Article 1 abstract The aim of this study was to estimate the importance of factors a.ecting the breeding success of the grey heron (Ardea cinerea) in three colonies in the northern Poland (Mosty and Ryback), differentiated in population size, habitat type and feeding areas used by birds. The highest mean […]
The Song of the Green Heron (Butoroides virescens virescens)
Green Heron (Butorides virescens) Science Article 3 abstract The ‘pumping’ of the Bittern and the ‘cooing’ of the Least Bittern may be classedu nder the head of song,b ut for the Herons as a group there seems to be singularly little recorded in the way of a coUrtShip song CHARLES W. TOWNSEND, The AUK, Vol. […]
Green Heron as a Potential Prey Species of the Broad-winged Hawk.
Green Heron (Butorides virescens) Science Article 2 abstract Avian surveys were conducted 21-23 May 1974 in a series of three kettle holes onthe Montague Plain, iu Franklin County, near Greenfield, Massachusetts. Pitchpine (Pinus rigida) dominated the bases and sides of the kettle holes. Ponds,surrounded by a dense growth of meadow-sweet (Spiraea latifolia) and S. tomentosa),were […]
SOME OBSERVATIONS IN A GREEN HERON COLONY
Green Heron (Butorides virescens) Science Article 1 abstract This report has to do with some observations made in a Green Heron colony during the seasons of 1921 and 1922. The colony was located in a willow marsh near the north shore of the eastern section of the dam at Lakeview, Kansas. BESSIE PRICE REED, The […]
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 […]
COMPARISON OF TECHNIQUES FOR CENSUSING GREAT BLUE HERON NESTS
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, […]