Arizona Field Ornithologist
©2008
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Index to all articles on AZFO Web Site

Arizona Birds Online:
The Journal of the Arizona Field Ornithologists

Peer-reviewed articles about status, distribution and identification of Arizona Birds

Current Issue:

 

Velvet mesquite, photo by Doug Jenness

 

FIRST RECORD OF TROPICAL KINGBIRDS NESTING IN MESQUITE IN ARIZONA

by Doug Jenness


ABSTRACT: The Tropical Kingbird (Tyrannus melancholicus), a widely distributed tyrant flycatcher in the Americas, breeds in the United States in southern Arizona and southern and western Texas (Stouffer and Chesser 1998, Brush 2005). Its breeding range in Arizona has been increasing over the past several decades (Corman 2005, Jenness 2015). The most favored breeding site for Tropical Kingbirds in Arizona is the tops of larger Fremont cottonwoods (Populus fremontii), often near bodies of water (Phillips et al. 1964, Monson and Phillips 1981, Corman 2005). It also has been reported nesting in pecan trees (Carya illinoinensis), particularly rows of trees along roadsides in agricultural areas (Corman 2005, Jenness 2015), and at least once each in athel tamarisk (Tamarix aphylla) (Corman 2005) and Chinese
elm (Ulmus parvifolia) in 2014 at Willcox (eBird 2012). Throughout its extensive range this species favors locations with open edges by ponds, rivers, fields, golf courses, etc. Within this context, it utilizes a wide range of nesting
sites. In Texas, for example, in addition to cottonwood, Washingtonian palm (Washingtonia robusta), Texas ebony (Pithecellobium ebano), and other tall trees, it is known to construct its nest in artificial structures such as power
poles, electric substations, and football stadiums (Stouffer and Chesser 1998, Brush 2005). In Sonora, the Mexican state south of Arizona, it frequently nests in mangroves (Rhizophora sp.) in coastal areas and in cottonwoods along riparian belts farther north (Russell and Monson 1998).

Full PDF article available here.

Previous Issues:

 

Prairie Falcon, photo by Nathan Williams

 

TEN YEARS OF THE SANTA CRUZ FLATS RAPTOR COUNT

by Doug Jenness

ABSTRACT: Between 2006 and 2015, I coordinated an annual one-day January raptor count at the Santa Cruz Flats. Teams of volunteers surveyed designated sections of the 900 km² area. The goal was to determine which
raptor species winter there, their relative numbers, and population trends over time. This paper evaluates the data collected for 20 species of raptor. Although the 10-year time span is too short to identify any definitive trends, over the last five years of the count there were declines in the numbers of three species—28% decline for Northern Harrier (Circus cyaneus), 17% for American Kestrel (Falco sparverius), and 13% for Red-tailed Hawk (Buteo jamaicensis). White-tailed Kite (Elanus leucurus) and Barn Owl (Tyto alba), observed in the first years of the count, have not been reported since 2009 and 2012, respectively. The mean for Crested Caracara (Caracara cheriway) has increased 28% over the most recent five years of the count. For most species, the annual difference was too small to suggest any trends. The survey will be continued to obtain data over a longer time period.

Full PDF article available here.

 

Previous Issues:

 

Adult Crested Caracara, photo by Muriel Neddemeyer

 

CRESTED CARACARA IN ARIZONA: BACKGROUND & RECENT EXPANSION

by Doug Jenness

ABSTRACT: This paper reviews the research history on the Crested Caracara (Caracara cheriway) in Arizona and summarizes the current knowledge of caracara distribution, which shows that caracaras are expanding in the state.
I show that part of this expansion is reflected by new field observations and data documenting nesting northeast of its previously known breeding territory, as well as the extent of nonbreeding caracaras to wander and socially forage in the state.

click here for web version or here for PDF version

 

 

 

Fledgling Tropical Kingbird, photo by Keith Kamperr

 

THE RECENT EXPANSION OF TROPICAL KINGBIRD
IN ARIZONA

by Doug Jenness

click here for web version or here for PDF version

 

 

Botteri’s Sparrow photo by Alan Schmierer

 

JANUARY 2014 BOTTERI’S SPARROW (Peucaea botterii arizonae) SURVEYS, WITH WINTER HABITAT CONSIDERATIONS

by Alan Schmierer

click here for web version or here for PDF version

 

 

Arizona Botteri’s Sparrow photo by Alan Schmierer

 

CURRENT POST-BREEDING, WINTER, AND SPRING STATUS OF BOTTERI’S SPARROW (Peucaea botterii arizonae) IN ARIZONA

by Alan Schmierer

click here for web version  or here for PDF version

 

 

Cassin's Sparrow photo by Pierre Deviche

 

THE PROBABLE BREEDING OF CASSIN’S SPARROW (Peucaea cassinii) IN PINAL COUNTY

by Doug Jenness

click here for web version or here for PDF version

 

 

 

Rosy-faced Lovebird photo by Pierre Deviche

 

STATUS OF THE ROSY-FACED LOVEBIRD IN PHOENIX, ARIZONA

by Kurt Radamaker and Troy Corman

click here for web version or here for PDF version

 

 

Sedge Wren photo by Alan Schmierer

 

FIRST DOCUMENTED OBSERVATION OF SEDGE WREN
(Cistothorus platensis) IN ARIZONA

by Alan Schmierer

click here for web version or here for PDF version

 

 


Green Kingfisher- Photo by Brendon Grice

BIRD SPECIES ADDED TO THE MARICOPA
COUNTY, ARIZONA LIST SINCE 1996

by Janet Witzeman
click here for web version or here for PDF version


Articles from Arizona Birds Online Volume 3, 2008


Common Teal - Photo by Michael C. Moore

First documented observation of Common Teal
(Anas crecca crecca) in Arizona

by Pierre Deviche and Michael Moore
click here for web version or here for PDF version





Neotropic Cormorant - Photo by Michael C. Moore

Status of Neotropic Cormorant in Arizona with
notes on identification and ageing

by Kurt Radamaker and Troy Corman
click here for web version or here for PDF version






Arizona Birds Online

Information on submitting articles 

Past Issues:

Volume 2 - 2007
Volume 1 Number 2
Volume 1 Number 1

Other Article Pages:

Birding in Arizona

ID Challenges


 

Updated Saturday, 09 April 2016

©2005
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