Canadian Field-Naturalist 75:225-237. All available sources lead to the conclusion that the Eastern Meadowlark in Canada has experienced both national and regional population declines since at least the 1960s. Pp. Environment Canada, Gatineau, Quebec, K1A 0H3. Eastern Meadowlark annual abundance indices and linear trend plotted on a log scale for Canada between 1970 and 2009, Figure 4. + appendices. There are currently no studies on the population spatial structure or variability of the Eastern Meadowlark in Canada. Botanist and Assistant Director. The species is currently not tracked by biodiversity information centres in Ontario (Ontario Ministry of Natural Resources 2009), Quebec (Gouvernement du Québec 2010) or the Maritimes (S. Blaney pers. Special Publication, Canadian Wildlife Service, Environment Canada. An approach to the study of ecological relationships among grassland birds. Mineau, P. 2005. Lutmerding, J. 2007. Environmental Toxicology and Chemistry. COSEWIC assessment and status report on the Eastern Meadowlark Sturnella magna in Canada. Range of Occurrence in Canada: Ontario, Quebec, New Brunswick, Nova Scotia. Population trend information from the Breeding Bird Survey for the period 1970 to 2009 shows a statistically significant decline of 3.1% per year in Canada, which corresponds to an overall decline of 71%. It is ranked ‘Least concern’ according to the IUCN Red List (NatureServe 2009). 2008. Nest success of grassland birds in Florida dry prairie. Fay, J.M. 1996. American Midland Naturalist 147:305-314. Grassland birds in southern Wisconsin: habitat preference, population trends, and response to land use changes. Lima. Other races of the Eastern Meadowlark are widespread in Central America and northern South America. They are well concealed in the vegetation and consist of a grass cup covered by grass woven from the surrounding vegetation (Bent 1958; Wiens 1969; Roseberry and Klimstra 1970). Atlantic Canada Conservation Data Centre. The sides, flanks and undertail-coverts are dull white with dusky black streaking. There is evidence that mortality resulting from the use of toxic pesticides has been contributing to farmland bird declines in North America, including Eastern Meadowlark. 2008). At that time, the Canadian population was estimated at about 250,000 adults (roughly 125,000 breeding pairs), which represents about 2.5% of the global population. Laroe, and J.M. Kennedy, T.D. It is a diurnal migrant and starts its fall migration at the beginning of September (Bent 1958). This product continues to be used in most Latin American countries on a wide variety of crops (Mineau 2005), where it could continue to affect wintering birds from Canada. In Illinois, 44% of females emigrated from the nest field following nesting (Kershner et al.2004). Male defends nesting territory by singing. A. and A. S. Love. 2007. 1980. No data on survival exist for Eastern Meadowlarks in Canada. Its range is not, however, continuous across the north shore of Lake Superior (Cadman et al. 1248 pp. The young are naked and helpless upon hatching, and remain in the nest for 10-12 days. In Wisconsin, agricultural edges did not appear to concentrate mammalian predators (Renfrew et al.2005), which means that grassland birds face predation by species that forage outside of the grassland as well as those that hunt within it (Renfrew and Ribic 2003; Renfrew et al. Relative abundance was frequently greater in pastures with more core area and in landscapes with more grassland and less wooded area. Ranks assigned to the Eastern Meadowlark in North America, Committee on the Status of Endangered Wildlife in Canada, Wild species 2005: the general status of species in Canada, Centre de données sur le patrimoine naturel du Québec, NatureServe Explorer: An Online Encyclopedia of Life. Smith. It is ranked ‘apparently secure’ in Ontario, ‘vulnerable’ in Quebec, ‘imperiled’ in New Brunswick, and ‘critically imperiled’ in Nova Scotia. Knapton, R.W. It has bright yellow underparts marked with a distinctive black V-shape pattern on the chest. Technical Report Series No. To have a better experience, you need to: Le site exige JavaScript pour fonctionner comme il faut, avec rapidité et stabilité. The minimum area required is estimated at 5 ha (Herkert 1994). Vickery. Smith, J.D. Étude des populations des oiseaux du Québec (ÉPOQ) / Study of Quebec Bird Populations (SQBP). In 1978, COSEWIC designated its first species and produced its first list of Canadian species at risk. Cornell Lab of Ornithology. 2004). (Version: March 2005). Vidal, and T.C. Prior to European settlement, the Eastern Meadowlark was most common in midwestern North America, where it occurred in native grasslands and savannahs and in open areas created around Aboriginal settlements. Vous utilisez un navigateur désuet qui n’est plus accepté par Mostly insects and seeds. Wilson Bulletin 82:243-267. It arose from the need for a single, official, scientifically sound, national listing of wildlife species at risk. Combining Breeding Bird Survey and Christmas Bird Count data to evaluate seasonal components of population change in Northern Bobwhite. Eastern Meadowlark (Sturnella magna), version 2.0. Easton, M. Gustafson, E. Iñigo-Elias, E.A. 2009. However, nearly every state, including all northern states bordering Canada, shows a statistically significant population decline (Sauer et al. Learn more about these drawings. Brewer, D., A. Diamond, E.J. Several studies have suggested that predation is a major source of nest failure of several grassland bird species, including Eastern Meadowlark (Knapton 1988; Granfors et al. Pp. Pardieck, D.J. 2011). 2007. Krebs, A.O. James, R.D. Male Eastern Meadowlarks defend their territories against Western Meadowlarks with the same intensity as with conspecifics (Lanyon 1957; Szijj 1966). Cornell Lab of Ornithology, Ithaca, New York, USA. Nest (built by female) is a domed structure with the entrance on the side, made of grass stems interwoven with surrounding growth. Sturnella magna (Linnaeus 1758) is commonly called the Eastern Meadowlark. Back to top. Age of first reproduction is 1 year. Females build their nests in shallow depressions on the ground and cover them with a roof woven from grasses. Blaney, S., pers. December 2009.