Observations of great blue heron Ardea herodias and black-crowned night heron Nycticorax nycticorax and their detrimental effect on nesting habitat, Inkerman Migratory Sanctuary, New Brunswick, 1971-2006... : CW69-5/451E-PDF
"Inkerman Migratory Bird Sanctuary, Inkerman, New Brunswick, Canada (47º 40' N 64º 47' W) was surveyed fifteen times between 1971 and 2006. The heronry consists of Great Blue Heron (GBH) Ardea herodias and Black-crowned Night Heron (BcNH)Nycticorax nycticorax. Based on ground counts, the GBH colony ranged from a low of at least ten nests in 1971 to a high of 81 in 1993. The GBH colony remained relatively stable from 1972 to 2006 (Mean = 58 nests, S.D. = 15, n = 11 ground census). The range in BcNH numbers has been more dramatic, being first reported present in 1971, ground counts have ranged from a low of 200 nests in 1987 to 601 in 1993 (Mean = 371, S.D. =140, n = 7). The 2005 nest count is deceiving as the BcNH appear to have deserted the colony after nest initiation. The 36 year history of the colony, depicting habitat use and change, has been documented with the aid of aerial photographs (1963, 1971, 1985 and 2002) and survey notes. Habitat loss, predominantly tree death as a result of bird defecation and regurgitation, has had a major impact on colony stability; possibly resulting in an abandonment of the BcNH colony in 2005"--Abstract, p. i.
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| Ministère/Organisme | Canada. Environment Canada. Canadian Wildlife Service. Atlantic Region. |
|---|---|
| Titre | Observations of great blue heron Ardea herodias and black-crowned night heron Nycticorax nycticorax and their detrimental effect on nesting habitat, Inkerman Migratory Sanctuary, New Brunswick, 1971-2006 / Colin M. MacKinnon, Andrew C. Kennedy. |
| Titre de la série | Technical report series ; no. 451 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Autres formats offerts | Papier-[Anglais] |
| Note(s) | "19 October, 2006". Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Also available in print format. Includes abstract in French. |
| Information sur la publication | [Sackville, New Brunswick] : Canadian Wildlife Service, Atlantic Region, c2006. |
| Auteur / Contributeur | MacKinnon, Colin Mark,1959- Kennedy, Andrew C. |
| Description | i, 33 p. : col. ill. |
| Numéro de catalogue |
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| Descripteurs | Conservation areas Migratory birds |
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