If these threats are not managed effectively, the species may become Threatened. Key threats to the species occur throughout its life cycle, including incidental mortality and nest failure from haying and other agricultural activities, habitat loss and fragmentation and pesticide exposure in all seasons, and persecution at winter feeding and roosting sites. Based on improved analytical techniques, the ten-year decline reported in the 2010 status report is now believed to have been -26%, similar to the -25% change between 20. Population size decreased sharply throughout the 1980s and 1990s, and has since continued to decline, but at a slower rate. Over 25% of the global population breeds in Canada, mostly from Saskatchewan to Quebec. This grassland songbird undertakes an annual round-trip migration of approximately 20,000 km between its breeding grounds in southern Canada and wintering range in central South America. Également disponible en français sous le titre Évaluation et Rapport de situation du COSEPAC sur le Goglu des prés ( Dolichonyx oryzivorus) au Canada.ĬOSEWIC assessment summary Assessment summary – May 2022 Common name This report was overseen and edited by Marcel Gahbauer, Co-chair of the COSEWIC Birds Specialist Subcommittee.Į-mail: Committee on the Status of Endangered Wildlife in Canada (COSEWIC) ( Species at risk public registry).ĬOSEWIC would like to acknowledge Jon McCracken for writing the status report on Bobolink ( Dolichonyx oryzivorus), in Canada, prepared under contract with Environment and Climate Change Canada. Committee on the Status of Endangered Wildlife in Canada. COSEWIC assessment and status report on the Bobolink Dolichonyx oryzivorus in Canada. ( Species at risk public registry).ĬOSEWIC. 2010. This report may be cited as follows:ĬOSEWIC. 2022. COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk.
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