Article
Ornithology
Yihenew Aynalem, Afework Bekele, Bezawork Afework Bogale
Summary: This study assessed the population size, habitat use, and foraging habits of Helmeted Guineafowl in the Arjo-Didessa River Valley in southwestern Ethiopia. Results showed significant differences in population size and foraging behavior among different habitat types and seasons. Anthropogenic disturbances pose a threat to local populations of the species.
Review
Biodiversity Conservation
N. J. Collar, Tim Wacher
Summary: The Nubian Bustard is widely distributed across the Sahel zone in Africa, but there is limited and unevaluated information regarding its conservation. Populations may now be greatly fragmented and depleted, particularly in Mauritania, Mali, and Sudan. The national nature reserves in Niger and Chad have become crucial for the long-term survival of the species. Urgent targeted programs are needed to minimize disturbance, persecution, and habitat damage, with a focus on excluding powerlines. Ultimately, a large-scale program of ecologically and economically sustainable management practices is essential for the survival of this and other endemic Sahelian species.
BIRD CONSERVATION INTERNATIONAL
(2023)
Article
Ornithology
Onolragchaa Ganbold, Otgontsetseg Khuderchuluun, Ganchimeg J. Wingard, Shiilgemaa Yaish, Erdenetushig Purevee
Summary: This study reports the infestation of Ixodes lividus ticks on sand martins and lesser kestrels in southeastern Mongolia. The prevalence and infestation level of ticks were investigated in adult birds and nestlings, revealing a decrease in infestation rate with nestling age. This research is important for understanding the impact of ectoparasites on population dynamics and for conservation efforts.
ORNITHOLOGY RESEARCH
(2023)
Article
Ornithology
Sanjo Rose, Robert Leslie Thomson, Alan Tristam Kenneth Lee, Peter Geoffrey Ryan
Summary: The Agulhas Long-billed Lark is a species restricted to the transformed Agulhas Plain, South Africa. This study provides new information on its nesting behavior, parental care, and breeding success. The lark prefers to nest in Renosterveld and faces threats such as nest predation, habitat loss, and exposure to pesticides.
JOURNAL OF ORNITHOLOGY
(2023)
Article
Ornithology
Jamie Dunning, Terry Burke, Julia Schroeder
Summary: The question of why socially monogamous females engage in extra-pair behavior is explored in this study. The results suggest that females who divorce their social partner are more likely to produce extra-pair offspring, but it does not demonstrate that these females also have a higher proportion of extra-pair offspring. Additionally, the number of broods initiated by females is positively correlated with the number of extra-pair males that father their offspring.
JOURNAL OF AVIAN BIOLOGY
(2023)
Article
Agriculture, Dairy & Animal Science
Eyda A. Moreno-Mosquera, Robby M. Drechsler, Silvia Rivera, Juan S. Monros
Summary: Understanding habitat selection patterns in congeneric species is important for designing conservation strategies. This study analyzed the reproductive habitat selection of three coexisting warbler species in the eastern Iberian Peninsula. The results showed that the species had different preferences for vegetation types and cover, highlighting the importance of specific habitat requirements for each species. This information is valuable for understanding local community composition and reproductive habitat selection.
AVIAN BIOLOGY RESEARCH
(2023)
Article
Ornithology
Kristina D. Kondrakova, Yuri M. Markin, Kirill A. Postelnykh, Sasha Pekarsky, Ran Nathan, Alexander V. Sharikov
Summary: This study aimed to investigate the impact of short-term weather conditions on the movement of Common Crane during the premigration period, and found that temperature, precipitation, and wind speed have significant effects on their daily distances and maximum displacements.
JOURNAL OF ORNITHOLOGY
(2023)
Article
Ornithology
Irene Hernandez-Tellez, Jose Ignacio Aguirre, Ivan de la Hera, Alejandro Onrubia, Jose Luis Telleria
Summary: Mountain birds face challenges caused by altitude-dependent environmental seasonality. This study compares the growth rate and mass of tail feathers, as well as wing configuration, between highland and lowland bird populations. The results show that highland birds have less time available for breeding and moulting, longer and more concave wings, and faster feather growth rates than lowland populations. The findings suggest that selection might have favored an accelerated moult and a more migratory behavior in highland populations to cope with the reduction in the optimal temporal window as elevation increases.
Article
Ornithology
Gemechis B. Mosisa, Nega Tassie, Sintayehu W. Dejene
Summary: This study estimated bird species diversity and abundance in the Suba Forest area of central Ethiopia and found that habitat type and season significantly influenced bird abundance and richness. Native forest supported the highest number of bird species, highlighting the region's potential for biodiversity conservation and sustainable wildlife tourism. Continuous monitoring and effective conservation measures will benefit not only avifauna but also other taxa in the region.
Article
Ornithology
Emile Brisson-Curadeau, Charles-Andre Bost, Yves Cherel, Kyle Elliott
Summary: The study investigates the links between foraging success, foraging effort, and diet in a myctophid specialist seabird, the King Penguin. It shows that despite variable foraging conditions, the penguins maintain a stable diet based on isotopic signatures. However, when foraging success is low, the penguins spend more time at sea.
Article
Ornithology
Ian R. Cleasby, Ellie Owen, Adam Butler, Julia Baer, Jez Blackburn, Maria I. Bogdanova, Tessa Coledale, Francis Daunt, Stephen Dodd, Julian C. Evans, Jonathan A. Green, Tim Guilford, Michael P. Harris, Robert Hughes, Mark A. Newell, Stephen F. Newton, Gail S. Robertson, Lise Ruffino, Akiko Shoji, Louise M. Soanes, Stephen C. Votier, Ewan D. Wakefield, Sarah Wanless, Linda J. Wilson, Mark Bolton
Summary: Knowledge of seabird distributions is crucial for seabird conservation and marine management. However, most seabird colonies have not been tracked, so alternative methods must be used to assess their foraging distribution. By analyzing multiple tracking datasets, we found significant variations in foraging range among different colonies and individuals. Our estimates of typical foraging ranges for each species were also subject to high uncertainties.
Article
Ornithology
Isabel Barwisch, Wolfgang Mewes, Angela Schmitz Ornes, Sebastian Guenther
Summary: Urbanization and industrialization have resulted in high levels of heavy metal pollution around the world, posing a threat to ecosystems. In this study, the concentrations of arsenic, cadmium, copper, and lead were analyzed in eggshells of Common Cranes nesting in north-eastern Germany. The results showed that only copper and lead were present in the eggshell samples, and their concentrations were not considered toxic to birds. The study also found a significant decrease in trace element concentrations over the study period. While the ban of leaded gasoline and restrictions on heavy metal-based biocontrol products have contributed to this decrease, increasing agricultural areas have led to a gradual increase in copper levels. Additionally, the study revealed that heavy metals do not accumulate in the circulatory systems of adult cranes over time. This study is the first to assess heavy metal contamination in Common Cranes and highlights the potential of crane's eggshells as a bioindicator for monitoring environmental pollution.
JOURNAL OF ORNITHOLOGY
(2023)
Article
Ornithology
Yassine Teyar, Dimitri Giunchi, Mohamed El Bekkay, Widade Oubrou, Mohammed Znari, Mohamed Aourir
Summary: This study provides the first data on the breeding ecology of the Cream-coloured Courser in a grazed semi-arid steppe in southwestern Morocco. The study reveals that the egg-laying period occurs between early May and July, with comparable clutch size and egg volume to the Cape Verde subspecies. Moreover, the nest survival rate during the entire incubation period is relatively high.
Article
Ornithology
Amanda R. Bourne, Camilla Soravia
Summary: The study found that Southern Pied Babblers engage in huddling behavior to compete for limited cool microsites during extremely hot weather, which is different from the usual strategy for keeping cool.
Article
Ornithology
Fabian Anger, Marc I. Foerschler, Nils Anthes
Summary: Most farmland birds in Europe are experiencing declines, likely due to agricultural intensification. Our study on Meadow Pipits in the Northern Black Forest found that the observed population declines may be driven by reduced reproductive success. We also found that higher altitude and adverse weather conditions delay hatching dates, and dense grass swards and small clutch sizes are associated with lower reproductive success. Restoration efforts involving cattle grazing and vegetation control may be key to increasing population productivity.
JOURNAL OF ORNITHOLOGY
(2023)
Article
Ornithology
Penn Lloyd, Jonathan T. Coleman
Summary: Delayed natal dispersal in Eastern Yellow Robins is primarily exhibited by male young, who delay dispersal to help their parents or relatives. Female birds tend to disperse further after reaching independence. The presence of helpers significantly increases annual productivity, implying indirect fitness benefits for the Eastern Yellow Robin population.
EMU-AUSTRAL ORNITHOLOGY
(2023)
Article
Ornithology
Steven K. Albert, Rodney B. Siegel
Summary: Several widely misused terms in ornithology have led to misconceptions about important concepts in the ecology of Nearctic-Neotropical migratory birds. The terms "North America," "wintering," "spring migration," and "fall migration" are inappropriate when referring to these birds, as they are inaccurate for their life cycle outside of temperate regions.
ORNITHOLOGICAL APPLICATIONS
(2023)
Article
Ornithology
Volodymyr M. Kucherenko
Summary: The first evidence of white-headed duck reproduction in Crimea is reported. Breeding in wetlands close to human settlement might be a response to human disturbances in more remote areas. The appearance of breeding birds in Crimea might be the result of changes in climate or reductions in other pressures such as hunting or fishing.
ORNITHOLOGY RESEARCH
(2023)
Article
Ornithology
Julien M. Wright-Ueda, Rodolfo Dirzo, Tyler N. Mcfadden
Summary: Protected areas have mixed effects on long-term bird population trends, with about one-third of species experiencing declines. Long-term fire suppression may be a key driver, reshaping bird communities through changes in forest and chaparral structure and composition. Furthermore, most species show similar population trends inside and outside of protected areas, with only a few species performing better inside these areas. Therefore, it is important to develop relevant management strategies and consider how each species is targeted and managed within protected areas.
Biographical-Item
Ornithology
Penny Olsen, Mike Newman
EMU-AUSTRAL ORNITHOLOGY
(2023)
