We further suggest a mechanism for adoption to be adaptive in Eastern Bluebirds
That vertebrate-directed raptorial behavior by Western Bluebirds has not been reported previously, despite intensive observation of Western Bluebird behavior, suggests that, similar to Eastern Bluebirds
, Western Bluebirds rarely capture vertebrate prey.
Orientation and spacing of nesting boxes used by Eastern Bluebirds
and Tree Swallows.
We documented this unusual behavior through personal observations and video recordings while conducting a study on nest defense and parental behavior of eastern bluebirds
in Payne County, Oklahoma (36[degrees]06'31"N, 97[degrees]15'08"W), in 2009.
From late May-July 2007, we located and monitored the nests of seven species known to breed in edge habitat: Tree Swallow (Tachycineta bicolor), Eastern Bluebird
(Sialia sialis), Gray Catbird (Dumetella carolinensis), Brown Thrasher (Toxostoma rufum), Yellow Warbler (Dendroica petechia), Northern Cardinal (Cardinalis cardinalis), and Red-winged Blackbird (Yasukawa and Searcy 1995, Imbeau et al.
Evaluation of nest-box sites selected by eastern bluebirds
, tree swallows, and house wrens.
We have investigated the signaling function of blue plumage in a wild population of eastern bluebirds
and found that structurally-based plumage may act as a signal of male quality to conspecifics.
After nearly vanishing, eastern bluebirds
are making a comeback thanks to efforts such as Luminant's program to restore habitat and provide nesting boxes.
David Pitts has spent a lifetime with Eastern Bluebirds
Nestboxes for Eastern Bluebirds
should have a round entrance hole measuring 1-1/2 to 1-9/16 inches in diameter, or a 1-3/8 x 2-1/4-inch vertical oval hole, or a 1-1/8 to 1-3/16 horizontal slot entrance.
Declining and not rebounding were American crows, American robins, Eastern bluebirds
, black-capped chickadees, Carolina chickadees, and tufted titmice, she and her colleagues report in the June 7 Nature.
Additional projects include establishing a nest box monitoring program for Eastern bluebirds
, American kestrels, barn owls and purple martins; planting food plots for wildlife, and installing wood duck nest boxes and a variety of other ongoing projects that enhance and protect Eastman's unused land as a habitat for wildlife.
We assessed the effects of 15 microhabitat variables (that is, habitat variables measured within a 10-meter radius of the nest box) on artificial nest site selection and on annual productivity (total number of eggs per nest per year = TOTEGGS) of eastern bluebirds
(Sialia sialis) in southern Georgia.
to seeking out Eastern Bluebirds
that have recently been
The group of 56 Clinton Middle School grade 6 students became citizen scientists as they opened and examined Eastern Bluebird
nesting boxes on the farm to decide whether they had been used by Eastern Bluebirds
or by other nesting birds during the 2012 nesting season.