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Avian Biology Research
Journal Prestige (SJR): 0.401

Citation Impact (citeScore): 1
Number of Followers: 4

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1758-1559 - ISSN (Online) 1758-1567
Published by Sage Publications

[1176 journals]

Sex determination in blue-fronted parrot (Amazona aestiva) using head and
radiographic biometry
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  Authors: Gabriele Bortolotto Cunha, Erika Paola Pereira Silva, Jair Duarte da Costa Junior, Líria Queiroz Luz Hirano
  Abstract: Avian Biology Research, Ahead of Print.
  Similar to most Psittaciformes, the blue-fronted parrot (Amazona aestiva) lacks sexual dimorphism. In this way, sexing methods have been investigated to assist in the reproductive management and medical care of these birds. This study aimed to assess head and radiographic biometry for sex identification of blue-fronted parrots. Six head measurements and 23 radiographic measurements of 52 carcasses (24 males and 28 females) were taken. Males exhibited higher mean values than females for most of the measurements. For head biometry, the proposed discriminant equation containing rhinotheca length and head plus rhinotheca length allowed for correct sexing of 60% of males and 88% of females, while for radiographic biometry the discriminant equation containing head heigh and right alula length allowed the discrimination of 84.6% of males and 66.7% of females. This is the first study evaluating the use of radiographic biometry for sexing psittaciforms. Both biometric methods are suitable for sexing blue-fronted parrots when DNA sampling is not possible, since they are low-cost, provide immediate results, and are non-invasive techniques.
  Citation: Avian Biology Research
  PubDate: 2024-07-26T05:00:37Z
  DOI: 10.1177/17581559241268134
Solar bird banding: Notes on changes in avian behavior while mist-netting
during an eclipse
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  Authors: Adara DeNiro, Kyle D Kittelberger, Atoosa M Samani, Çağan Hakkı Şekercioğlu
  Abstract: Avian Biology Research, Ahead of Print.
  Solar eclipses present rare celestial events that can elicit unique behavioral responses in animals, yet comprehensive studies on these phenomena, particularly concerning bird behavior, remain limited. This study, conducted at the Red Butte Canyon Research Natural Area in Utah during the annular solar eclipse on October 14, 2023, aimed to document and analyze avian activity using bird banding data. Leveraging 11 years of banding records, we observed a surprising positive peak in bird captures, indicating increased activity during the eclipse, challenging conventional expectations of decreased activity during peak totality. The unexpected, record-breaking captures on the eclipse day at this location, which also surpassed the average trend in captures over time for 18 other banding days in mid-October, highlights the complexity of bird behavior during celestial events. This study marks the first known published effort to conduct bird banding during a solar eclipse. Quantitative analyses, including species composition and capture trends, contribute to a nuanced understanding of avian responses to the eclipse. This study underscores the importance of empirical research in unraveling the intricacies of how birds navigate and adapt to unique environmental conditions created by solar eclipses.
  Citation: Avian Biology Research
  PubDate: 2024-07-19T12:27:43Z
  DOI: 10.1177/17581559241265581
Multiple plumage color signals associated with courtship displays may
represent body quality in male golden pheasants (Chrysolophus pictus)
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  Authors: Xiaogang Yao, Zhumei Li, Canchao Yang, Wei Liang, Anders Pape Møller
  Abstract: Avian Biology Research, Ahead of Print.
  Many animals display numerous colors that can range from red, green, blue, and orange to ultraviolet, whereas others are dull or have a uniform coloration. The reason for this variation in coloration remains unknown. It has been hypothesized that different colors represent multiple signals that either reflect different components, redundant information, or simply no longer provide reliable information regarding body quality. Here, we analyzed the highly diverse coloration of male golden pheasants (Chrysolophus pictus) using an avian visual model from the avian visual system and related the different components of coloration to several phenotypic traits of body quality. We found that different components of plumage color correlated with the length of the body, tail, spur, and beak, suggesting that the multiple colors in male golden pheasants signal different components of body quality. In particular, tail length was correlated with many aspects of coloration, especially the green and orange colors of neck plumage, which are particularly important because male golden pheasants spread their neck plumage and show it to females during their courtship display. Therefore, these findings reveal that the plumage colors of male golden pheasants encode multiple signals that reflect their body condition during courtship displays.
  Citation: Avian Biology Research
  PubDate: 2024-07-19T05:44:48Z
  DOI: 10.1177/17581559241265582
Seasonal changes in habitat use and behavior of the threatened Pampas
meadowlark Leistes defilippii
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  Authors: Agustín G Álvarez, Natalia C Cozzani, Sergio M Zalba, F. Rodrigo Tizón
  Abstract: Avian Biology Research, Ahead of Print.
  The Pampas grasslands’ biodiversity is severely threatened by habitat modification, as is the case for the Pampas meadowlark (Leistes defilippii). Here we study the areas used by the species throughout the year in the Southern Pampas of Argentina, in association with seasonal changes in behavior, in an attempt to provide information for its effective conservation. We selected four grassland sites with livestock activities in which we studied vegetation characteristics and the abundance and behavior of the Pampas meadowlark, during breeding and non-breeding seasons. The species was absent in sites with higher bare ground cover and lower cover of>30 cm vegetation, and with high proportions of forb, shrub or exotic grass species. In those areas where the Pampas meadowlark was present during the breeding season, its abundance was higher where the grassland was entirely dominated by native grasses, and abandoned another site when the grassland became dominated by introduced plant species, after the breeding period. We are the first to report the behavior of a Pampas meadowlark population throughout an entire year with its seasonal changes. Our results and description of the behavior throughout the year highlight the importance of structural heterogeneity of the grasslands, determined by a low intensity of grazing, for the breeding of the Pampas meadowlark. Also, features associated with breeding habitat can’t predict the presence of flocks during the non-breeding season, as noted in our results for vegetation structure, but vegetation composition, food availability and landscape variables could play an important role in determining which areas serve as appropriate habitat during the non-breeding season, when large flocks search the grasslands for food. A better understanding of the habitat requirements and the use of space at different scales by the Pampas meadowlark will allow the identification of the most urgent and effective measures for its conservation.
  Citation: Avian Biology Research
  PubDate: 2024-06-19T11:57:11Z
  DOI: 10.1177/17581559241264486
Diet overlap of overwintering migratory birds on the northern coast of the
Yucatan Peninsula
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  Authors: Aldo Echeverría-Caro, Juan Manuel Dupuy-Rada, Víctor Parra-Tabla, Richard Evan Feldman
  Abstract: Avian Biology Research, Ahead of Print.
  Previous studies of overwintering migratory birds in neotropical environments have found that species co-occur in the same habitats despite high diet overlap. Hence, discovering subtle diet differences within habitats can help explain patterns in bird species diversity. The Yucatan Peninsula in Mexico is an important region for overwintering migratory birds, but little is known about how habitat differences in food resources contribute to bird diversity. To address the knowledge gap, we compared the degree of overlap in the diet of all terrestrial migratory birds within and between mangrove and tropical dry forests on the Yucatan Peninsula’s northern coast. We collected data on the consumption of food items through direct observation of birds feeding on four transects in each habitat every week (12 weeks) during the non-breeding season (i.e., overwinter, December-February). We recorded 19 species, 15 species in mangrove and 15 species in forest, with 11 of those found in both habitats. In both habitats, diet overlap was high. However, species present only in the tropical dry forest had less overlap than species occurring in both habitats, indicating that diet specialization might restrict the range of habitats that a species can occupy. On the other hand, species present only in the mangrove had similar diet overlap to species present in both habitats. The diet variation that did exist was greater within than between habitats possibly due to intraspecific diet differences among different geographic locations. Although small, within-habitat diet differences might be key to allowing species to coexist locally in the Yucatan, thus supporting studies demonstrating a similar mechanism in other neotropical regions. More generally, the information we provide on bird diet can be used to discover whether threats like anthropogenic development precipitate species loss via altering the resource base upon which birds rely.
  Citation: Avian Biology Research
  PubDate: 2024-06-17T09:14:59Z
  DOI: 10.1177/17581559241261799
Seasonal migration directs and facilitates gene flow in the Broad-tailed
and Lucifer Sheartail Hummingbirds
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  Authors: Juan Camilo Gutierrez-Toro, Héctor Anibal Campos Mosos
  Abstract: Avian Biology Research, Ahead of Print.
  Gene flow, the movement of genes between populations, profoundly influences genetic and phenotypic homogeneity among populations. This study investigates gene flow patterns in two migratory hummingbird species, Selasphorus platycercus and Calothorax lucifer, shedding light on the intricate interplay between migration, resource availability, and genetic diversity. Using previously published information on microsatellites, we examine the genetic makeup and the movement of genes within populations. Selasphorus platycercus displays distinct genetic groups which can be associated with its migratory behaviour. Gene flow analysis suggests a higher level of connectivity among populations sharing winter ranges. In contrast, Calothorax lucifer populations exhibit genetic divergence despite overlapping winter ranges, possibly due to environmental niche adaptation and limited reproductive opportunities for dispersing individuals. While geographical distance does not explain genetic differentiation in these species, environmental niche similarities appear to facilitate gene flow. This study underscores the significance of migratory routes, resource availability, and niche adaptation in shaping gene flow dynamics in hummingbirds. Understanding these dynamics is crucial for the conservation and management of these unique avian populations.
  Citation: Avian Biology Research
  PubDate: 2024-05-02T02:19:20Z
  DOI: 10.1177/17581559241249053
Temporal pattern in foraging behaviour of Vanellus malabaricus in relation
to different seasons and habitats
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  Authors: Prateek, Himanshu Mishra, Vikas Kumar, Ashish Kumar
  Abstract: Avian Biology Research, Ahead of Print.
  This study monitored the temporal pattern of the diurnal foraging behaviour of yellow-wattled lapwing Vanellus malabaricus Boddaert, 1783 (Charadriiformes: Charadriidae) in different seasons (breeding and non-breeding) and habitats (uncultivated, cultivated, ponds and rivers). The focal observation method was employed to investigate the foraging behaviours of yellow-wattled lapwings. Foraging techniques showed non-significant (p = 0.85) variation in different habitat types; however, walk-halt pecking (WHP) was observed to be the most commonly utilized foraging technique across all habitats. Furthermore, foraging success varied significantly in seasons (p
  Citation: Avian Biology Research
  PubDate: 2024-05-02T01:20:39Z
  DOI: 10.1177/17581559241237725
Breeding habitat selection of three sympatric species of Mediterranean
warblers in eastern Spain
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  Authors: Eyda A. Moreno-Mosquera, Robby M. Drechsler, Silvia Rivera, Juan S. Monrós
  Abstract: Avian Biology Research, Ahead of Print.
  Understanding habitat selection patterns in congeneric species has raised special interest due to its importance when designing conservation strategies for the species. We analysed reproductive habitat selection of three coexisting warbler species in the eastern Iberian Peninsula. We detected the individuals by their vocalizations at 40 listening points in two study areas (Carcaixent and Alcoy). We used satellite images to identify different vegetation types and their availability. Reproductive habitat selection was analysed by the Ivlev selectivity index and a compositional analysis. In addition, we determined the effect of different habitat variables (dominant vegetation, vegetation height, cover and site) on the presence of the species fitting a binomial GLM with logistic linking function. We found that the Sardinian Warbler (Curruca Melanocephala) selected scrub-dominated areas; while the Dartford Warbler (C. undata) preferred areas with low (
  Citation: Avian Biology Research
  PubDate: 2023-11-18T12:07:50Z
  DOI: 10.1177/17581559231216907

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