This at least is not the Turdus migratorius
. The pitch pines and shrub oaks about my house, which had so long drooped, suddenly resumed their several characters, looked brighter, greener, and more erect and alive, as if effectually cleansed and restored by the rain.
Abstract: A mixed thymoma was diagnosed in a 15-year-old female American robin (Turdus migratorius
) that exhibited poor body condition, dysphagia, hyporexia, and depression.
Sayornis phoebe), robin adults and juveniles (Turdus migratorius
), house wrens (Troglodytes aedon) (Figure 5), and multiple other unidentified Passerines.
En especies de origen Neotropical como Turdus migratorius
fue de 53.6 % (Yen, Klass, & Kam, 1996), el 16.9 % para Turdus assimilis y el 10.2 % para T grayi (Lindell, O'Connor, & Cohen, 2011).
We began this study after observing that flocks of American robins (Turdus migratorius
) and cedar waxwings (Bombycilla cedrorum) left behind seemingly ripe fruit after visiting patches of laurel cherry for days.
Gross (1965) en un estudio en donde se evaluo la incidencia de aberraciones cromaticas (sin distinguir albinismo de leucismo) en aves de Norteamerica, recopilo un total de 1,847 registros de aves y documento que el tordo sargento es una de las especies con la mayor incidencia con estas aberraciones junto con el gorrion domestico (Passer domesticus) y el mirlo primavera (Turdus migratorius
Plagiorhynchus cylindaraceus normally utilizes passerine birds as definitive hosts, particularly American robins (Turdus migratorius
) and starlings (Sternus vidgaris) and the terrestrial isopod (Armadillidium vulgarae) as intermediate host.
Excluding mallards (Anas platyrhynchos), overall mean clutch size was highest in bobolinks ([bar.x] = 4.6, n = 18) and eastern meadowlarks ([bar.x] = 4.2, n = 16) and lowest in brown thrashers ([bar.x] = 3.0, n = 8), American robins (Turdus migratorius
) ([bar.x] = 3.3, n = 16), and willow flycatchers ([bar.x] = 2.5, n = 6) (Fig.
Only ticks from hosts that produced a minimum of 10 newly molted nymphs were tested for infection, with the exception of flying squirrels (Glaucomys volans), masked shrews (Sorex cinereus), and American robins (Turdus migratorius
), which had low tick loads.
He was stationed first in Aurora, Ontario, to study crop damage by American robins Turdus migratorius
in cherry and grape orchards (1967-71), and thereafter in the Maritimes, based at BIO, where he remained until his retirement in 1994.
Looking for Lunch: American robin (Turdus migratorius
) digging for worms; Curtis, Wash.