The contrasting black and white stripes on the head of the White-Crowned Sparrow has led to it being affectionately nicknamed "skunk head". It spends both summer and winter in largely open habitats, where it frequently rakes the ground with its feet to unearth seeds and insects.
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White-crowned Sparrow
The White-crowned Sparrow is a common breeding species of Canada's northern and western forests, shrubby tundra, and subalpine areas. It winters across most of the United States, with small numbers extending into southern British Columbia and Ontario. Approximately 40 million individuals breed in Canada, representing just over half of the global total and a high level of responsibility for Canada. Another 35 million breed in Alaska and migrate to or through western Canada, boosting the national proportion to 95%, which is very high. The Canadian population has experienced little change relative to 1970 based on the Christmas Bird Count, but confidence in the trend is only medium, as the Breeding Bird Survey offers conflicting evidence of a decline. The national population of White-crowned Sparrow is within its goal range.
Both the Breeding Bird Survey (BBS) and Christmas Bird Count (CBC) provide insights into the status of White-crowned Sparrow in Canada. The BBS is more standardized than the CBC, but samples a smaller proportion of the population and is less precise. Although both are considered to have medium reliability, the CBC likely reflects the overall trend more accurately because it provides a more representative sample of the population. The continental CBC trend shows a gradual decline since the early 1970s, but at -23% over that period remains just within the bounds of little change. In contrast, the national BBS trend shows relative stability through most of the 1970s and 1980s, but then a steeper decline, amounting to a large decrease of 70% relative to 1970. However, because so much of the breeding population is north of the area covered by the BBS, the CBC trend is likely to be more representative for White-crowned Sparrow.
The goal for White-crowned Sparrow is to maintain its population at or above the level it was at in the early 1970s, based on the Christmas Bird Count. Recent data show that the population is within its goal range.
| Designation | Geographic Area | Status | CITATION |
|---|---|---|---|
| IUCN | Global | Least Concern | |
| Wild Species | Canada | Secure |
The contrasting black and white stripes on the head of the White-Crowned Sparrow has led to it being affectionately nicknamed "skunk head". It spends both summer and winter in largely open habitats, where it frequently rakes the ground with its feet to unearth seeds and insects.
White-crowned Sparrow is reported throughout the year in Canada, with peaks in spring and fall migration when it's moving to and from its mostly boreal breeding grounds.