Results 51 to 60 of about 1,274 (170)

Threats to seabirds: A global assessment [PDF]

open access: yes, 2019
We present the first objective quantitative assessment of the threats to all 359 species of seabirds, identify the main challenges facing them, and outline priority actions for their conservation. We applied the standardised Threats Classification Scheme
Borboroglu, Pablo Garcia   +9 more
core   +1 more source

Diurnal timing of nonmigratory movement by birds: the importance of foraging spatial scales [PDF]

open access: yes, 2020
Timing of activity can reveal an organism's efforts to optimize foraging either by minimizing energy loss through passive movement or by maximizing energetic gain through foraging.
Beard, Annalea   +63 more
core   +1 more source

Reconstructing Early Human Subsistence in Near Oceania: New Insights From Matenkupkum and Matenbek

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT The colonization of New Ireland ~44–40,000 years ago represents the earliest evidence of human occupation in Near Oceania. Yet, the precise impacts of climatic changes on subsistence strategies during the Late Pleistocene, Last Glacial Maximum, and Holocene remain poorly understood.
Joëlle den Toom   +3 more
wiley   +1 more source

Abundance of�Phalacrocoraxbrasilianus�(Gmelin, 1789) (Suliformes: Phalacrocoracidae) in Two Congregation Places in San Marcos, Sucre, Colombia

open access: yesIndian Journal of Science and Technology, 2017
Objective: The abundance of Phalacrocoraxbrasilianus (Neotropic cormorant) was determined for the two climatic seasons of the year in the lagoon complex of San Marcos, Sucre, Colombia. Reproductive aspects are also discussed and the patterns of utilization that this species has for the work zone are determined.
Darwin Hern�ndez   +2 more
openaire   +1 more source

Data analysis of the mid-winter census of wintering aquatic birds on the territory of Ramsar sites along the Bulgarian Black Sea coast for the period 2012 – 2021 [PDF]

open access: yes, 2023
Wetlands along the Bulgarian Black Sea coast are important wintering points for aquatic birds during the winter period, which is why the site is included in the mid-winter census, which is part of ornithological monitoring in our country.
Berberova, Ralitza   +1 more
core   +2 more sources

Censos vespertinos de una población de la boba marrón Sula leucogaster (Boddaert, 1783) (Ave: Suliformes: Sulidae) en la isla La Tortuga, Venezuela

open access: yesEcotropicos, 2020
En Venezuela, la reproducción de la boba marrón (Sula leucogaster) es frecuentemente observada en aguas costeras de las islas Los Monjes, Las Aves, La Orchila y Los Hermanos. No obstante, son pocos los estudios existentes sobre su dinámica y densidad poblacional.
Marín-Espinoza, Gedio   +4 more
openaire   +1 more source

Citizen science reveals host‐switching in louse flies and keds (Diptera: Hippoboscidae) during a period of anthropogenic change

open access: yesMedical and Veterinary Entomology, Volume 40, Issue 2, Page 305-322, June 2026.
A study of louse flies in the United Kingdom, Isle of Man, and Ireland found 212 different interactions between Hippoboscidae and their hosts, of which 70 were previously unrecorded. No louse flies were found on aquatic species of birds. Host‐switching to gulls (Laridae) has occurred during a period in which these species have started relying on ...
Denise C. Wawman   +2 more
wiley   +1 more source

Holding a wing horizontal: Roles for muscles of the pectoral girdle other than the main two flight muscles

open access: yesJournal of Anatomy, Volume 248, Issue 5, Page 830-842, May 2026.
This report explores which muscles of the pectoral girdle are employed to allow birds to hold their wings horizontally with a level aerofoil surface during a glide. Abstract Whilst many birds glide briefly with wings held horizontally, some species maintain this posture for extended periods during soaring.
D. Charles Deeming, María Clelia Mosto
wiley   +1 more source

Nuevo hospedador y registro geográfico de Contracaecum australe (Nematoda, Anisakidae) parasitando a Phalacrocorax gaimardi (Aves, Phalacrocoracidae) en costas del Atlántico Sudoccidental [PDF]

open access: yes, 2014
Fil: Garbin, Lucas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Química Ambiental y Biogeoquímica; ArgentinaFil: Capasso, Sofía. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro
Capasso, Sofía   +5 more
core   +1 more source

Insights about Diversity of Tetrabothriidae (Eucestoda) among Holarctic Alcidae (Charadriiformes): What Is \u3ci\u3eTetrabothrius jagerskioeldi\u3c/i\u3e? [PDF]

open access: yes, 2020
Tetrabothriid cestodes are characteristic helminths that infect species of seabirds globally. We begin with the exploration of the diversity of tapeworms of the genus Tetrabothrius Rudolphi, 1819 (Eucestoda: Tetrabothriidae), some of which are ...
Hoberg, Eric P.   +1 more
core   +1 more source

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