The feeding habits and preferences of four species of songbirds, northern cardinals (Cardinalis cardinalis), song sparrows (Melospiza melodia), dark-eyed juncos (Junco hyemalis), and white-throated sparrows (Zonotrichia albicollis) were examined from November to February of 1980-81, 1981-82, and 1982-83.
Therefore, the objectives of this study were to analyze winter foods of northern cardinals (Cardinalis cardinalis), song sparrows (Melospiza melodia), dark-eyed juncos (Junco hyemalis), and white-throated sparrows (Zonotrichia albicollis) collected on areas which had been recently clearcut, site prepared, and planted to pine seedlings, and to determine if these species were selecting seeds of certain genera or if their feeding habits were dependent on seed availability.
Why American robins were the predominant hosts found in host-feeding studies in Connecticut, Maryland, and Washington, DC (4,5) and why northern cardinals
were the preferred hosts in our study are not clear.
We have some gray catbirds and northern cardinals
that are over 10 years old.
We quantified a rate of antibody decay for 23 northern cardinals
(Cardinalis cardinalis) of 0.
Before moving to Florida earlier this year, Bruce lived just north of New York City, where he noticed this pair of northern cardinals
nesting during early spring in an evergreen tree a few feet away from his house.
A series of relatively mild winters has almost certainly contributed to the northward range expansion of northern cardinals
and several other 'southern' species that were historically not seen in New York.
People can't hear a difference between the songs of female and male northern cardinals
Also, 59 horned larks; a record 1,366 black-capped chickadees; 25 brown creepers; 31 Carolina wrens, a new high; 48 golden-crowned kinglets; one ruby-crowned kinglet; 31 eastern bluebirds; two hermit thrushes; 2,255 American robins; one gray catbird; 23 northern mockingbirds; 2,760 European starlings; 175 cedar waxwings; two eastern towhees; 86 American tree sparrows; one chipping sparrow; one field sparrow; one savanna sparrow; 58 song sparrows; five swamp sparrows; 214 white-throated sparrows; 2,093 dark-eyed juncos; 13 snow buntings; 215 northern cardinals
, a new record; 147 red-winged blackbirds, another record; one common grackle; 24 brown-headed cowbirds; 84 house finches; 449 American goldfinches; and 753 house sparrows.
Oral VecTest performed well for small samples of American Kestrels (Falco sparverius), Northern Cardinals (Cardinalis cardinalis), Common Grackles (Quiscalus quiscula), and House Finches (Carpodacus mexicanus).
The test detected WNV in [greater than or equal to]50% of RT-PCR-positive birds of the following species: American Kestrels (Falco s7)arverius) (3/4), Northern Cardinals (Cardinalis cardinalis) (4/6), Common Grackles (3/6), and House Finches (Carpocus mexicanus) (7/7) but was unable to detect WNV in RTPCR-positive Red-tailed Hawks (Buteo jamaicensis) (0/10) and Great Horned Owls (Bubo vitginianus) (0/12).
Among the larger numbers recorded this year - along with the evening grosbeaks, pine grosbeaks and common redpolls - were 731 house sparrows, 689 rock (Dove) pigeons, 533 dark-eyed juncos, 508 cedar waxwings, 478 starlings, 462 American tree sparrows, 396 American crows, 383 tufted titmouse, 326 American goldfinches, 275 mourning doves, 252 snow buntings, 230 wild turkeys, 217 black-capped chickadees, 204 white-breasted nuthatches, 126 northern cardinals
, 131 downy woodpeckers, 111 common ravens and 101 blue jays.