Rufous-collared Sparrow (Zonotrichia capensis)

2020 ◽  
Author(s):  
James D. Rising ◽  
Alvaro Jaramillo
Keyword(s):  
Zonotrichia Capensis

scholarly journals Secondary contact followed by gene flow between divergent mitochondrial lineages of a widespread Neotropical songbird (Zonotrichia capensis)

2014 ◽  
Vol 111 (4) ◽  
pp. 863-868 ◽  
Author(s):  
Leonardo Campagna ◽  
Cecilia Kopuchian ◽  
Pablo L. Tubaro ◽  
Stephen C. Lougheed
Keyword(s):  
Gene Flow ◽  
Secondary Contact ◽  
Zonotrichia Capensis

scholarly journals The Role of Gastrolites on Feeding Behavior and Digestive Efficiency in the Rufous-Collared Sparrow

The Condor ◽  
2000 ◽  
Vol 102 (2) ◽  
pp. 465-469
Author(s):  
M. Victoria LÓpez-Calleja ◽  
Mauricio Soto-Gamboa ◽  
Enrico L. Rezende
Keyword(s):  
Digestive Tract ◽  
Laboratory Experiments ◽  
Morphological Changes ◽  
Digestive Efficiency ◽  
Accidental Ingestion ◽  
Energy Demands ◽  
Zonotrichia Capensis ◽  
Different Types ◽  
Voluntary Behavior

Abstract We examined grit consumption in the facultative granivorous Rufous-collared Sparrow (Zonotrichia capensis). Grit consumption fluctuated seasonally and was significantly correlated with morphological changes in the digestive tract, and with seed size. The highest values of grit consumption and digestive tract mass were observed during winter. Laboratory experiments suggested that grit consumption was a voluntary behavior rather than the result of accidental ingestion, and favored digestibility. Grit consumption varied considerably when Z. capensis fed on different types of food, but remained constant when food availability varied. We suggest that grit consumption together with morphological changes in the digestive tract allow Z. capensis to increase energy acquisition in response to higher energy demands during wintertime.

scholarly journals External and gastrointestinal parasites of the rufous-collared sparrow Zonotrichia capensis (Passeriformes, Emberizidae) in Chile

2017 ◽  
Vol 26 (3) ◽  
pp. 314-322
Author(s):  
Sebastián Llanos-Soto ◽  
Braulio Muñoz ◽  
Lucila Moreno ◽  
Carlos Landaeta-Aqueveque ◽  
John Mike Kinsella ◽  
...  
Keyword(s):  
Gastrointestinal Parasites ◽  
Feather Mites ◽  
Central Chile ◽  
Zonotrichia Capensis ◽  
Distributional Range ◽  
First Time ◽  
Amblyomma Tigrinum

Abstract A total of 277 rufous-collared sparrows, Zonotrichia capensis Müller, 1776 (Emberizidae), were examined for external parasites. The birds were captured using mist nets in seven locations in northern and central Chile. Additionally, seven carcasses from central Chile (the Biobío region) were necropsied to evaluate the presence of endoparasite infection. Ectoparasites were found on 35.8% (99/277) of the examined birds and they were represented by the following arthropods: feather mites Amerodectes zonotrichiae Mironov and González-Acuña, 2014 (Analgoidea: Proctophyllodidae), Proctophyllodes polyxenus Atyeo and Braasch, 1966 (Analgoidea: Proctophyllodidae), and Trouessartia capensis Berla, 1959 (Analgoidea: Trouessartiidae); a louse Philopterus sp. (Phthiraptera: Ischnocera); and ticks Amblyomma tigrinum Koch, 1844 (Acari: Ixodidae) and Ixodes auritulus Neumann, 1904 (Acari: Ixodidae). Two of the seven necropsied carcasses were infected with the acanthocephalan Mediorhynchus papillosus Van Cleave, 1916 (Gigantorhynchida: Gigantorhynchidae). To our knowledge, this study reports P. polyxenus, Philopterus sp., A. tigrinum, and M. papillosus for the first time for Z. capensis and expands the distributional range for T. capensis to Chile.

Transcriptomic variation and plasticity in rufous-collared sparrows (Zonotrichia capensis) along an altitudinal gradient

2008 ◽  
Vol 17 (20) ◽  
pp. 4556-4569 ◽  
Author(s):  
ZACHARY A. CHEVIRON ◽  
ANDREW WHITEHEAD ◽  
ROBB T. BRUMFIELD
Keyword(s):  
Altitudinal Gradient ◽  
Zonotrichia Capensis

Responses in the abundance of generalist birds to environmental gradients: The rufous-collared sparrow (Zonotrichia capensis) in the southern Neotropics

Ecoscience ◽  
2011 ◽  
Vol 18 (4) ◽  
pp. 354-362 ◽  
Author(s):  
M. Isabel Bellocq ◽  
Julieta Filloy ◽  
Gustavo A. Zurita ◽  
Melisa F. Apellaniz
Keyword(s):  
Environmental Gradients ◽  
Zonotrichia Capensis

Morphological relationships among subspecies of the Rufous-collared Sparrow, Zonotrichia capensis

1985 ◽  
Vol 63 (10) ◽  
pp. 2383-2388 ◽  
Author(s):  
Paul Handford
Keyword(s):  
Intraspecific Variation ◽  
Environmental Effects ◽  
Local Environment ◽  
Andes Mountains ◽  
Museum Specimens ◽  
High Latitudes ◽  
High Altitudes ◽  
Southern Andes ◽  
Zonotrichia Capensis ◽  
Phenetic Relationships

The phenetic relationships among 22 described subspecies of Zonotrichia capensis, the Rufous-collared Sparrow, are investigated by analyses of variation in six external metric variables taken from over 1500 museum specimens. Both sexes show the same marked dichotomy between two groups of subspecies: pulacayensis, sanborni, antofagastae, chilensis, choraules, and australis versus all others. These six subspecies are from temperate high altitudes and high latitudes and occupy a geographically contiguous region in the southern Andes mountains and Patagonia. Within these two subgroups there is extensive overlap among individuals; finer division of the subspecies is difficult, and involves the association of subspecies from geographically disjunct regions. Thus the taxonomic hierarchy appears to be a poor representation of variation of the characters considered here. The association of geographically disjunct forms suggests that intraspecific variation in these characters reflects the local environment (via selection and (or) environmental effects) rather than historical (genealogical) relationships.

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