Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991. Part 5, Herons and egrets in 1991 / Hans Blokpoel, Gaston D. Tessier. : CW69-5/272E-PDF
"During the 1991 breeding season an inventory was made of Great Blue Herons (Ardea herodias), Great Egrets (Ardea alba) and Black-crowned Night-Herons (Nycticorax nycticorax) nesting in the Canadian portions of Lake Huron (except for the waters surrounding Manitoulin Island) and the lower Great Lakes, including Lake St. Clair and the upper St. Lawrence River. Canadian Lake Superior was not surveyed in 1991, so 1989 data are used as substitutes in this report"--Abstract.
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| Ministère/Organisme | Canada. Environment Canada. Canadian Wildlife Service. Ontario Region. |
|---|---|
| Titre | Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991. Part 5, Herons and egrets in 1991 / Hans Blokpoel, Gaston D. Tessier. |
| Variante du titre | Herons and egrets in 1991 |
| Titre de la série | Technical report series ; no. 272 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Autres formats offerts | Papier-[Anglais] |
| Note(s) | Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 19-21). Issued also in print format. Includes abstract in French. |
| Information sur la publication | Nepean, Ont. : Canadian Wildlife Service, Ontario Region, c1998. |
| Auteur / Contributeur | Blokpoel, H., 1938- Tessier, G. D. |
| Description | iv, 36 p. : maps. |
| Numéro de catalogue |
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| Descripteurs | Aquatic birds Population distribution Lakes Herons Egrets |