Migrating Blue Jays

The Auk ◽  
1931 ◽  
Vol 48 (2) ◽  
pp. 272-273
Author(s):  
Althea R. Sherman
Keyword(s):  
Blue Jays

Performance of Blue Jays on a Two-Choice Functional Tool Task

2012 ◽  
Author(s):  
Kristy Gould ◽  
Abigail Seyfer ◽  
Debra Hansberry ◽  
Emily Lynn ◽  
Quinn Meyer ◽  
...  
Keyword(s):  
Blue Jays

Addendum to Problems and Benefits of Bird Ownership

1999 ◽  
Vol 84 (2) ◽  
pp. 368-370
Author(s):  
Aline H. Kidd ◽  
Robert M. Kidd
Keyword(s):  
Wild Birds ◽  
Men And Women ◽  
Pet Birds ◽  
And Behaviors ◽  
Blue Jays

Because several recent studies suggested that adults who fed only wild birds would report having different problems and benefits than did pet bird owners who also fed wild birds, and pet bird only owners, the present study added data to clarify such differences. 150 adults were selected so that 50 persons (25 men and 25 women) each were classified into one of three groups: those who only owned pet birds, those who owned pet birds and also fed wild birds, and those who only fed wild birds. There were no significant differences between men and women in any of the three groups, and no significant differences in their responses. The 50 people who fed wild birds only reported having added problems with neighbors' cats, bees, ants, squirrels, blue jays, and other oppressive larger birds, but the 50 pet bird owners who also fed wild birds and the owners of pet birds only reported the same problems with minor differences in type and number of interlopers. Clearly, all bird lovers shared similar characteristics, feelings, and behaviors toward birds and acknowledged the minor differences in attitudes toward the benefits and problems created by the birds' various interactions and behaviors with humans.

Aversion/attraction of Blue Jays to microwave irradiation

1984 ◽  
Vol 33 (5) ◽  
pp. 805-807 ◽  
Author(s):  
F WASSERMAN ◽  
C DOWD ◽  
D BYMAN ◽  
B SCHLINGER ◽  
S BATTISTA ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Blue Jays

scholarly journals Visual Detection of Cryptic Prey by Blue Jays (Cyanocitta cristata)

Science ◽  
1977 ◽  
Vol 195 (4278) ◽  
pp. 580-582 ◽  
Author(s):  
A. T. PIETREWICZ ◽  
A. C. KAMIL
Keyword(s):  
Visual Detection ◽  
Cyanocitta Cristata ◽  
Blue Jays

scholarly journals Nut Selection by Captive Blue Jays: Importance of Availability and Implications for Seed Dispersal

The Condor ◽  
2006 ◽  
Vol 108 (2) ◽  
pp. 377-388 ◽  
Author(s):  
Jeffrey E. Moore ◽  
Robert K. Swihart
Keyword(s):  
Correlation Coefficients ◽  
Discrete Choice Models ◽  
Red Oak ◽  
Quercus Alba ◽  
Northern Red Oak ◽  
White Oak ◽  
Large White ◽  
Shagbark Hickory ◽  
Black Oak ◽  
Blue Jays

Abstract We assessed dietary preference of 14 captive Blue Jays (Cyanocitta cristata) for different food types under different conditions of availability. In four separate feeding trials, we provisioned jays with the following: Trial 1, two nuts each of white oak (Quercus alba), pin oak (Q. palustris), black oak (Q. velutina), northern red oak (Q. rubra), and shagbark hickory (Carya ovata); Trial 2, two small and two large red oak acorns; Trial 3, two germinating and two nongerminating white oak acorns; and Trial 4, one large red oak acorn, one large white oak acorn, and one shagbark hickory nut. We used discrete choice models to describe selection under conditions of changing choice sets. Blue Jays displayed a clear preference for pin oak and strong avoidance of red oak acorns when alternative foods were available. White oak and black oak acorns were selected intermediately. Shagbark hickory nuts were never used. Correlation coefficients suggested that preference was inversely related to seed size and the proportion of seed consisting of hard seed coat. In the absence of alternative food items, small red oak acorns were readily taken, whereas large red oak acorns were mostly avoided but still used by some birds. These results highlight the importance of considering food availability when making conclusions about preference, and lend support to the hypothesis that Blue Jays can be important dispersers of even less-preferred oak species. We discuss the potential as well as the limitations for Blue Jays to act as seed dispersers, with respect to postglacial range expansion of fagaceous tree species, and in the context of present-day dispersal in regions where forests are highly fragmented.

Observations on Blue Jays

Science ◽  
1898 ◽  
Vol 8 (190) ◽  
pp. 223-224
Author(s):  
Hiram M. Stanley
Keyword(s):  
Blue Jays

Fifty-Two Years of Banding Blue Jays at Norristown, Pennsylvania

Bird-Banding ◽  
1974 ◽  
Vol 45 (3) ◽  
pp. 206 ◽  
Author(s):  
Raymond J. Middleton
Keyword(s):  
Blue Jays

scholarly journals The not-so-blue jays

2020 ◽  
Vol 246 (3283) ◽  
pp. 21
Author(s):  
Chanda Prescod-Weinstein
Keyword(s):  
Blue Jays
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