Results 41 to 50 of about 4,256 (204)

How much sampling is enough? Four decades of understorey bird mist‐netting across Amazonia define the minimum effort to uncover species assemblage structure

open access: yesIbis, Volume 168, Issue 2, Page 571-587, April 2026.
Mist‐net sampling comprises a key methodological component of assemblage‐wide avifaunal studies, particularly in the understorey of closed‐canopy tropical forests. To investigate mist‐net bird captures and species assemblage structure, we compiled data from 312 sites across the Pan‐Amazon.
Pilar L. Maia‐Braga   +14 more
wiley   +1 more source

Avian Song Complexity is Associated With High Field Metabolic Rate [PDF]

open access: yes, 2006
Question: Is the production of bird song costly? Analyses of oxygen consumption during singing provided conflicting results. Data studied: Data on 28 passerine species with quantitative information on song complexity and field metabolic rate, which ...
Garamszegi, László Zsolt   +2 more
core  

Classification of bird species from video using appearance and motion features [PDF]

open access: yes, 2018
The monitoring of bird populations can provide important information on the state of sensitive ecosystems; however, the manual collection of reliable population data is labour-intensive, time-consuming, and potentially error prone.
Atanbori   +65 more
core   +3 more sources

Spring migration characteristics of the House Martin, Delichon urbica (Aves: Hirundinidae) in Croatia: A response to climate change?

open access: yesZoologia (Curitiba), 2011
Many authors have discussed use of birds (and other organisms) as sensitive biomonitors for climate change. In this paper we investigate the long-term trends in first arrival dates of the long-distance migratory House Martin, Delichon urbica (Linneus ...
Zdravko Dolenec, Petra Dolenec
doaj   +1 more source

First record of Eurasian Crag Martin Ptyonoprogne rupestris (Scopoli, 1769) (Aves: Passeriformes: Hirundinidae) from Tamil Nadu, India

open access: yesJournal of Threatened Taxa
Eurasian Crag Martin Ptyonoprogne rupestris is a small-sized aerial insectivorous bird from the family Hirundinidae , commonly grouped under swallows and martins. Here I present the first photographic proof of Eurasian Crag Martin at Tamil Nadu of India.
S. Naveen Kumar
semanticscholar   +1 more source

Presence of Psitticimex uritui (Hemiptera: Cimicidae) in nests of brown cacholote Pseudoseisura lophotes (Passeriformes: Furnariidae) [PDF]

open access: yes, 2008
Psitticimex uritui (Lent & Abalos), la chinche típica de la “cotorra” Myiopsitta monachus Boddaert, fue registrada por primera vez en los nidos del “caserote” Pseudoseisura lophotes (Reichenbach) en la provincia de Entre Ríos.
Aramburu, Rosana Mariel   +1 more
core  

Avian diversity and their status in and around Bhindawas bird sanctuary, Haryana (India) [PDF]

open access: yes, 2017
One year survey conducted in and around Bhindawas bird sanctuary in district Jhajjar, Haryana (India) from January, 2015 to December, 2015; revealed a total of 104 bird species belonging to 15 orders and 39 families.
Chopra, Girish   +2 more
core   +2 more sources

Influence of Fluvial Structure on Benthic Macroinvertebrates in a Restored Meandering River, Geul Basin, Netherlands

open access: yesEcohydrology, Volume 19, Issue 1, January‐February 2026.
ABSTRACT Benthic macroinvertebrates are indicators of water quality and riparian ecosystem health. Their abundance and distribution in streams are associated with river basin environmental factors, including stream biotic and abiotic fluvial processes. We examined benthic macroinvertebrate diversity and abundance in relation to large wood (LW) and pool‐
Markéta Hauferová   +2 more
wiley   +1 more source

Aggregating three sources of long‐term trends of swallows and martins to identify priority conservation areas in the Great Lakes region

open access: yesJournal of Applied Ecology, Volume 63, Issue 1, January 2026.
Our data integration methodology allows managers to identify regions that accumulate evidence of concerning trends across multiple wildlife monitoring schemes. These regions can thus be prioritized in conservation and management efforts. This approach can be generalized to other sources of long‐term monitoring data of different species, at different ...
Maria C. T. D. Belotti   +9 more
wiley   +1 more source

Strong Variation in Land‐Use Change Impacts on Tropical Avian Phylogenetic Diversity Between Ecoregions Highlights the Need to Sample Large Spatial Scales

open access: yesGlobal Change Biology, Volume 32, Issue 1, January 2026.
Forest conversion for agriculture is a major cause of biodiversity loss in the tropics, but its impacts depend on how broadly they are measured. Using data from across Colombia, one of the most biodiverse countries in the world, we examined how deforestation for cattle farming affects the evolutionary history of bird species.
Giovanny Pérez   +7 more
wiley   +1 more source

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