The Indigo Bunting's namesake blue colour is not due to pigments, but rather the microscopic structure of the feathers, which scatters and reflects light to create the brilliant blue appearance. Males are prodigious singers, and each song is slightly different, based on the songs a male hears when he is young.
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Indigo Bunting
The Indigo Bunting breeds along forest edges and in shrubby woodlands from southern Manitoba to southern Quebec and slightly into the Maritimes. It overwinters from southern Mexico to coastal Colombia and Venezuela, and across much of the Caribbean. There are approximately 1.7 million individuals in Canada, representing 2% of the global population and a low degree of responsibility for Canada. The Canadian population of Indigo Bunting has shown a moderate increase relative to 1970 based on the Breeding Bird Survey. Confidence in this assessment is high because coverage is good and precision in trends is high for this species. The national population of Indigo Bunting is within its goal range.
The Canadian population of Indigo Bunting is best monitored by the Breeding Bird Survey, which is well-suited to detecting the species, samples most of the breeding range, and has high precision. The long-term national trend shows considerable fluctuations over time, with the current level of abundance 41% above 1970 levels despite a largely declining trend since around 2007. The only notable regional deviation from that pattern is in the Maritimes, where the population has been increasing since the mid-1990s, although it remains small.
The goal for Indigo Bunting is to remain at or above its recent population level, based on the Breeding Bird Survey. Trend data show that Indigo Bunting is currently within its goal range.
| Designation | Geographic Area | Status | CITATION |
|---|---|---|---|
| IUCN | Global | Least Concern | |
| Wild Species | Canada | Secure |
The Indigo Bunting's namesake blue colour is not due to pigments, but rather the microscopic structure of the feathers, which scatters and reflects light to create the brilliant blue appearance. Males are prodigious singers, and each song is slightly different, based on the songs a male hears when he is young.
Indigo Bunting is primarily reported between May and October in Canada, as it migrates south in the nonbreeding season.