You may occasionally find a dead tree swallow
in a bluebird box; this is typically not caused by the design of the box itself, but due to a tree swallow
that migrated north too early in spring, before there was enough insect life to support it.
A comparison of the breeding ecology of a secondary cavity nesting bird, the tree swallow
(Tachycineta bicolor), in nest boxes and natural cavities.
Through the club's internship program, he has conducted wildlife research projects at Mass Audubon, including a longitudinal tree swallow
However, tree swallow
occupancy of nest boxes was low (1-4%) when bluebird declines began, and the decline had already progressed substantially before tree swallows
became common at the site.
Of the 11 short-distance migrant species detected, I confirmed that 4 species were nesters: Cinnamon Teal, Green Heron, Tree Swallow
, and Common Yellowthroat.
bacteria, fungi, viruses) than are males because (a) females participate in extra-pair copulations with multiple males, (b) the transmission of STMs during copulation is likely to be asymmetrical because ejaculates move from males to females, and (c) Tree Swallow
semen contains potentially pathogenic STMs.
As you pedal on, keep an eye out for soaring hawks, wandering geese, and wooden birdhouses made by schoolchildren for the white-chested, shimmery blue-winged tree swallow
reproductive investment, stress, and parasites.
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.
Occurrence and demography of mites of tree swallow
, house wren, and eastern bluebird nests.
While a tree swallow
will occupy an individual wooden birdhouse with a 1- 1/2-inch entrance hole close to the roof, the more gregarious purple martins need apartment-style birdhouses that accommodate from six to 24 pairs.