Results 21 to 30 of about 232,683 (167)

Integrating wetland bird point count data from humans and acoustic recorders

open access: yesAvian Conservation and Ecology, 2020
Wetland loss is cause for concern for populations of many wetland bird species throughout North America. The North American Breeding Bird Survey, the primary resource for broad-scale avian population data, does not provide sufficient data for many marsh ...
Laura N. Stewart   +4 more
doaj  

Influence of Habitat and Food Resource Availability on Common Raven Nest Site Selection and Reproductive Success in Mediterranean Forests

open access: yesBirds, 2021
Bird nest selection in forests can be influenced by the composition of key structural elements and resources. This has important consequences in terms of species population dynamics since it can determine reproduction success.
Amalia Segura, Pelayo Acevedo
doaj   +1 more source

Non-Invasive Monitoring of the Spatio-Temporal Dynamics of Vocalizations among Songbirds in a Semi Free-Flight Environment Using Robot Audition Techniques

open access: yesBirds, 2021
To understand the social interactions among songbirds, extracting the timing, position, and acoustic properties of their vocalizations is essential. We propose a framework for automatic and fine-scale extraction of spatial-spectral-temporal patterns of ...
Shinji Sumitani   +4 more
doaj   +1 more source

Disentangling Post-Fire Logging and High-Severity Fire Effects for Spotted Owls

open access: yesBirds, 2021
The Spotted Owl is a rare and declining raptor inhabiting low/middle-elevation forests of the Pacific Northwest, California, and the Southwest in the USA.
Chad T. Hanson   +2 more
doaj   +1 more source

Activity Patterns, Sex Ratio, and Social Organization of the Bare-Faced Curassow (Crax fasciolata) in the Northern Pantanal, Brazil

open access: yesBirds, 2023
Among Neotropical cracids (Galliformes), many taxa are declining rapidly in population size and facing local extinction. However, in the Brazilian Pantanal, several species occur sympatrically and in abundant numbers to allow for long-term studies ...
Martin Senič   +5 more
doaj   +1 more source

State of India's Birds 2023: A framework to leverage semi‐structured citizen science for bird conservation

open access: yesEcosphere
Birds and their habitats are threatened with extinction around the world. Regional assessments of the “State of Birds” are a vital means to prioritize data‐driven conservation action by informing national and global policy.
Ashwin Viswanathan   +15 more
doaj   +1 more source

Acoustic Classification of Bird Species Using an Early Fusion of Deep Features

open access: yesBirds, 2023
Bird sound classification plays an important role in large-scale temporal and spatial environmental monitoring. In this paper, we investigate both transfer learning and training from scratch for bird sound classification, where pre-trained models are ...
Jie Xie, Mingying Zhu
doaj   +1 more source

Avifaunal Diversity and Abundance in the Proposed Sarasalai Mangrove Reserve, Jaffna, Sri Lanka

open access: yesBirds, 2023
Mangrove ecosystems are excellent habitats for migrating and resident birds. The proposed Sarasalai mangrove reserve is located in one of the richest waterbird zones in Sri Lanka.
Nitharsan Aloysius   +2 more
doaj   +1 more source

Using DNA metabarcoding to explore spatial variation in diet across European Hawfinch populations

open access: yesJournal of Field Ornithology, 2023
The investigation of diet in avian species is essential for understanding their ecology and local adaptations, as well as long-term conservation. This can be particularly challenging because of the wide distribution and high ecological plasticity of many
Ewan H. Stenhouse   +5 more
doaj  

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