In reference to the Calliope Hummingbird, the National Audubon Society (2013) reports nonsignificant declines rangewide, but significant declines in Montana and Oregon.
As Armstrong (1987) noted, elevated perch sites are key elements in male Calliope Hummingbird territories.
The dive and shuttle displays of the Calliope Hummingbird appear to be used in a manner that is very similar to the way the Rufous Hummingbird (Selasphorus rufus) uses the same components of its territorial display.
data) show that the probability of detecting a Calliope Hummingbird in vegetation types classified as streamside shrublands (where mostly females were detected) and early successional shrublands following moderate to heavy timber harvest or wildfire (where mostly males were detected) is around 2%, which is 3-4 times greater than the overall average.
Size and abundance: breeding population density of the Calliope Hummingbird.
A calliope hummingbird
sips from a hummingbird trumpet blossom.
We provide the first report of overlap nesting in two other species, the Calliope Hummingbird (Stellula calliope) and Rufous Hummingbird (Selasphorus rufus).
On 3 July 2001, NB, GB, and John Vanderpoel were shown two Calliope Hummingbird nests in a rural backyard near Red Lodge, Montana.
Temperature relationship and nesting of the Calliope Hummingbird
platycercus) (Calder and Calder 1992) hummingbirds, as well as Calliope Hummingbird (Stellula calliope) (Tamm et al.
We found similar one-to-one correspondences between kinematics and tail-generated sounds in Anna's (Calypte anna), Black-chinned (Archilocus alexandri), and Calliope hummingbirds (Clark and Feo 2008, Clark 2009, Feo and Clark 2010).
In the related Anna's and Calliope hummingbirds, males will hold breeding territories in the absence of food (Tamm 1985, Armstrong 1987, Powers 1987, Tamm et al.