Changes to the Population Status of Horned Grebes (<i>Podiceps auritus</i>) and Red-necked Grebes (<i>Podiceps grisegena</i>) in Southwestern Manitoba, Canada
Abstract:Continental trend data for North America suggest that Horned Grebe (Podiceps auritus) breeding populations are declining and Red-necked Grebe (P. grisegena) populations are increasing. However, data reliability is low due to lack of survey routes in the northern boreal and taiga ecozones, areas encompassing much of the breeding range of both species. Locally in the southern Manitoba prairie ecozone, reliability of long-term trend data is also considered low and these data suggest that Horned Grebe populations … Show more
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