Ornithological studies in the Mackenzie Valley, 1973

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Canadian Arctic Gas Study Limited, 1974 - Nature - 295 pages
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Contents

INTRODUCTION l
1
RESULTS
8
DISCUSSION
65
SUMMARY
77
l0 Comparison of Mean Waterbird Densities on Selected
46
Number of Nests and Immature Birds Observed
2
l2 Birds Recorded Along Transects A4 A7 36
36
l6 Birds Recorded Along Transects Al8 A25 43
43
Common Merganser Mergus merganser April 27May
80
Grouse 90
90
Jaegers
101
Terns
106
RedBreasted Nuthatch Sitta canadensis May
115
YellowWarbler Dendroica petechia May 2225
121
Western Tanager Piranga ludoviciana May
127
Purple Finch Carpodacus purpureus May 323
128

European Wigeon Arms penelope May l4 67
67
Common Goldeneye Bucephala clangula April
73
CONCLUSIONS
154

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