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000
| 02520cam 2200421za 4500 |
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| 001 | 9.857472 |
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| 003 | CaOODSP |
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| 005 | 20221107155752 |
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| 007 | cr ||||||||||| |
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| 008 | 180605s1994 bccbd ob f000 0 eng d |
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| 020 | |z0662222245 |
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| 022 | |z0831-6481 |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn-bc |
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| 086 | 1 |aCW69-5/203E-PDF|zCW69-5/203E |
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| 100 | 1 |aSummers, Ken R. |
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| 245 | 10|aAerial surveys of waterfowl and gulls on the Fraser River delta, 1992-93 |h[electronic resource] / |cK. Summers, P. Hayes, R. McKelvey. |
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| 260 | |aDelta, B.C. : |bCanadian Wildlife Service, Pacific and Yukon Region, |c1994. |
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| 300 | |av, 64 p. : |bcharts, map. |
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| 490 | 1 |aTechnical report series ; |vno. 203 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references (p. 14). |
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| 520 | 3 |a"This report presents the results of 14 weekly aerial surveys for waterfowl and gulls flown over the Fraser River estuary between mid October 1992 and mid January 1993. The data are compared to those summarized for 1966-74, 1982-83, 1983-84 and 1989-90 by McKelvey and Summers (1990). The annual estimate of dabbling duck use of the entire estuary (Boundary Bay and the Fraser River foreshore) was higher than for 1989-90 but still below that of earlier surveys. Mean total numbers of gulls were higher than for all previous surveys. Waterfowl counts were highly variable between surveys. Comparisons with mid-winter counts from the U.S. in the Pacific flyway were made. Although the Fraser River estuary showed an increase in waterfowl populations for 1992, while the flyway continued to show a decline, the overall downward trend is still apparent"--Abstract, p. ii. |
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| 530 | |aIssued also in print format. |
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| 546 | |aIncludes abstract in French. |
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| 693 | 4|aWater birds |
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| 693 | 4|aBird populations |
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| 693 | 4|aBird surveys |
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| 693 | 4|aFraser River Delta (B.C.) |
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| 700 | 1 |aHayes, Patricia. |
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| 700 | 1 |aMcKelvey, Richard W. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aCanadian Wildlife Service. |bPacific and Yukon Region. |
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| 776 | 0#|tAerial surveys of waterfowl and gulls on the Fraser River Delta, 1992-93 / |w(CaOODSP)9.611875 |
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| 830 | #0|aTechnical report series (Canadian Wildlife Service)|vno. 203.|w(CaOODSP)9.504438 |
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| 856 | 40|qPDF|s2.30 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-203-eng.pdf |
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