Indigo Bunting (Passerina cyanea)

2020 ◽  
Author(s):  
Robert B. Payne
Keyword(s):  
Passerina Cyanea

Replaced Primaries in First Nuptial Plumage of Passerina Cyanea

Bird-Banding ◽  
1965 ◽  
Vol 36 (4) ◽  
pp. 270
Author(s):  
Charles H. Blake
Keyword(s):  
Passerina Cyanea

Nocturnal activity and orientation behavior during spring migration and early summer in the indigo bunting,Passerina cyanea

1980 ◽  
Vol 137 (1) ◽  
pp. 47-49 ◽  
Author(s):  
Wolfgang Wiltschko ◽  
Roswitha Wiltschko ◽  
Stephan T. Emlen ◽  
Natalie J. Demong
Keyword(s):  
Early Summer ◽  
Spring Migration ◽  
Orientation Behavior ◽  
Nocturnal Activity ◽  
Passerina Cyanea

A New Hybrid Bunting (Passerina cyanea × Passerina ciris)

The Auk ◽  
1974 ◽  
Vol 91 (3) ◽  
pp. 485-487 ◽  
Author(s):  
Walter Kingsley Taylor
Keyword(s):  
Passerina Cyanea ◽  
Passerina Ciris

scholarly journals Using a Commercially Available Enzyme Immunoassay to Quantify Testosterone in Avian Plasma

The Condor ◽  
2007 ◽  
Vol 109 (1) ◽  
pp. 181-186 ◽  
Author(s):  
Brian E. Washburn ◽  
Joshua J. Millspaugh ◽  
Dana L. Morris ◽  
John H. Schulz ◽  
John Faaborg
Keyword(s):  
Enzyme Immunoassay ◽  
Small Volume ◽  
Plasma Testosterone ◽  
Plasma Samples ◽  
Zenaida Macroura ◽  
Vireo Olivaceus ◽  
Testosterone Levels ◽  
Passerina Cyanea ◽  
Assay Procedure ◽  
Mourning Doves

Abstract Abstract Using a commercially available testosterone enzyme immunoassay (EIA), we developed and validated an assay procedure for determining testosterone levels in small-volume (20 µL) avian plasma samples. We evaluated this EIA's utility by measuring plasma testosterone levels in Mourning Doves (Zenaida macroura), White-eyed Vireos (Vireo griseus), Red-eyed Vireos (Vireo olivaceus), and Indigo Buntings (Passerina cyanea). Standard biochemical validations (e.g., parallelism, recovery of exogenous testosterone) demonstrated that the assay accurately and precisely measured testosterone in avian plasma. We compared plasma testosterone levels in males and females of all four species and Indigo Buntings in various reproductive stages to physiologically validate the assay's ability to determine biologically important changes in testosterone levels. Plasma testosterone levels were higher in males compared to females in three of four species. Prebreeding and breeding male Indigo Buntings had higher circulating testosterone levels than postbreeding males. Testosterone levels in our study were similar to reported values for other passerine species using radioimmunoassay procedures. Our results suggest that this EIA procedure is very effective for determining testosterone levels in small-volume avian plasma samples and is sensitive enough to detect biologically important changes in the gonadal activity of birds. Thus, this assay has considerable utility for measuring testosterone in small birds (<15 g), from which only small volumes of plasma (20 µL) can be collected.

Effects of Supplemental Food on the Behaviour and Paternity Status of Male Indigo Buntings (Passerina CyaNea)

2018 ◽  
Vol 11 (2) ◽  
pp. 67-73
Author(s):  
Brad T. McLeod ◽  
Gary Ritchison
Keyword(s):  
Time Budget ◽  
Mate Guarding ◽  
Breeding Birds ◽  
Food Supplementation ◽  
Time Budgets ◽  
Blood Samples ◽  
Supplemental Food ◽  
Extra Pair Paternity ◽  
Passerina Cyanea ◽  
And Control

Breeding is energetically costly and, if energy-limited, birds may alter their time budgets, spending less time engaged in some activities and more time in others. Investigators who have provided breeding birds with supplemental food have noted changes in time budgets, but the extent and types of changes have been found to vary among species. Our objective was to determine how food supplementation might influence the time budgets and paternity status of male Indigo Buntings (Passerina cyanea). We studied Indigo Buntings from 8 May to 15 August 2009 in Madison County, Kentucky. Territories of male Indigo Buntings (n=30) were randomly assigned as either food supplemented (n=8) or controls (n=22). During time-budget observations, all behaviours were noted. To determine paternity status, blood samples were collected from adults and nestlings at 16 nests. Males with feeders in their territories spent significantly less time foraging and more time vocalising (chip notes) than males without feeders. Time spent singing and mate guarding by treatment and control males did not differ. Differences in the proportion of extra-pair young did not differ between nests in territories with and without supplemental food. Our results suggest that, when provided with supplemental food, male Indigo Buntings spend less time foraging and more time engaged in other activities. However, neither the presence of supplemental food nor differences in the behaviour of males in food-supplemented versus non-supplemented territories affected rates of extra-pair paternity.

scholarly journals THE PLUMAGES AND MOULTS OF THE INDIGO BUNTING (Passerina cyanea)

Science ◽  
1900 ◽  
Vol 11 (277) ◽  
pp. 627-630 ◽  
Author(s):  
J. DWIGHT
Keyword(s):  
Passerina Cyanea

scholarly journals A Half-Century Comparison of Breeding Birds in the Southern Appalachians

The Condor ◽  
2001 ◽  
Vol 103 (2) ◽  
pp. 268-277
Author(s):  
J. Christopher Haney ◽  
David S. Lee ◽  
Mark Wilbert
Keyword(s):  
Land Use ◽  
Bird Community ◽  
Neotropical Migrants ◽  
Individual Species ◽  
Long Distance ◽  
Virtual Absence ◽  
Corvus Brachyrhynchos ◽  
Cavity Nesters ◽  
Passerina Cyanea ◽  
Continuous Forest

Abstract We evaluated long-term (∼50-year) change in a bird community of an extensively forested region of the southern Appalachian mountains in North Carolina and Tennessee. A species accumulation curve for a 1996–1998 survey identified a core of 50 breeding species in upper elevations of the Unicoi Mountains. Since a 1944–1946 survey, dominant species have remained identical, no species have disappeared, and mean ranked abundance of both short and long-distance migrants has not changed. Permanent residents, however, had decreased in rank by the late 1990s. Three “new” disturbance-dependent species, American Crow (Corvus brachyrhynchos), Indigo Bunting (Passerina cyanea), and Song Sparrow (Melospiza melodia), expanded into interior forest along a recently constructed parkway. Largest apparent increases in ranked abundance of individual species occurred in eight Neotropical migrants that rely upon mature, forest-interior habitat, whereas largest apparent declines in ranked abundance occurred in land-use generalists, cavity nesters, and three other Neotropical migrants. Modifications to land-use were reasonable explanations for changes in most species. Little change in community structure, greater representation of many Neotropical migrants, and virtual absence of Brown-headed Cowbirds (Molothrus ater) suggest that this large, continuous forest retained and probably regained functional integrity for forest birds during the latter half of the twentieth century.

scholarly journals THE OCCURRENCE OF APTOSOCHROMATISM IN PASSERINA CYANEA

Science ◽  
1900 ◽  
Vol 11 (269) ◽  
pp. 292-299 ◽  
Author(s):  
F. J. BIRTWELL
Keyword(s):  
Passerina Cyanea
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