Tag Archive | sparrows in alberta

Brewer’s Sparrow in Calgary

Dec8

Posted by Bob Lefebvre

On November 27th Gord Smith photographed this sparrow in his yard in NW Calgary. This is a Brewer’s Sparrow (Timberline subspecies). This is rarely reported in the city, or this late in the year anywhere in its northern range. They should all be in the SW USA or northern Mexico by now.

Brewer's Sparrow

Brewer’s Sparrow, NW Calgary, November 27, 2018. Photos by Gord Smith.

Brewer's Sparrow

Brewer's Sparrow

Brewer's Sparrow

 

Brewer’s Sparrows are related to Clay-colored and Chipping Sparrows which also breed locally. The similarity to these in non-breeding plumage is apparent. Had this bird been in my yard I don’t think I would have known what it was. Gord was familiar with the species, and the ID has been confirmed by Richard Klauke.

Brewer's Sparrow

Brewer’s is the smallest North American sparrow, and in this last photo you can see just how much smaller this bird is than a House Sparrow!

Travel Tuesday

May29

Our travelling birders, Alan and Marg, have sent us some pictures of a species that has never appeared on the blog. They were driving along RR181 near Twp 172 when they spotted this bird.

Lark Buntings are very much a bird of the southeastern portion of the province, and breed on the native prairie grasslands. Adult males in breeding plumage are black with large white wing patches, and can’t be mistaken for any other members of the sparrow family. His bill is blueish, and the bottom mandible is paler than the top one. Adult females resemble the other brown, streaked sparrows.

You have to be fairly lucky to see these birds, and the Status of Birds In Canada explains why.

Lark Bunting populations are highly nomadic from year to year, avoiding areas of drought and seeking out areas with adequate rainfall.

This is a difficult species to survey, with populations shifting around the grasslands of North America in response to annual variations in climate. Data from the Breeding Bird Survey (BBS) in Canada show large fluctuations and it is not possible to determine the direction of the population trend. BBS data from throughout their range suggest a moderate decline since about 1970, but again, the nomadic nature of the species creates uncertainty in this trend estimate.

Because of marked fluctuations and contradications among the available data sources, it is not possible to determine the population status in Canada.