Here’s one of every birdwatchers’ and birdfeeders’ favourites. And this is how much: in the 1960’s and 70’s, the population of these blue flyers went down 90% (!) due to harsh nesting competition between them and their rivals, the starlings and house sparrows.
Back at the Farm — It's Mulberry Season!
Birds of the Bible – Bluebirds Lee's Birdwatching Adventures Plus
On the Bright Side – Bluebirds - Central New Jersey
Flyers - LITTLE BIRD, garoando conceito
Bird News — The Wood Thrush Shop
Male Mountain Bluebird And Progress With His Natural Nest Cavity – Feathered Photography
Basics of monitoring Bluebird and other birds nest boxes — The Wood Thrush Shop
BIRD OF THE WEEK: THE EASTERN BLUEBIRD – Nature Anywhere
Out My Backdoor: Bluebird Nesting – A True-life Drama
Basics of monitoring Bluebird and other birds nest boxes — The Wood Thrush Shop
Flyers - LITTLE BIRD, garoando conceito
The Eastern Bluebird Mike Lascut Photography
Confessions of a Bluebird Fanatic
Cornell Ag Connection: Bluebirds are returning to the North Country, Opinion
The Bluebirds of Happiness – Brian, Birdwatching