Results 81 to 90 of about 11,966 (230)

Post‐hatching development of the remote‐tactile bill‐tip organ in precocial shorebirds (Scolopacidae)

open access: yesJournal of Anatomy, EarlyView.
Juvenile scolopacid shorebirds possess well‐developed osteological correlates of tactile bill‐tip organs, indicating sensory systems for remote‐touch foraging are present from early life. Ontogenetic changes in bill‐tip morphology suggest ecological specialisation and interspecific variation develop later, after fledging in these highly precocial ...
Carla J. du Toit   +2 more
wiley   +1 more source

The Influence of Migration Timing and Local Conditions on Reproductive Timing in Arctic‐Breeding Birds

open access: yesEcology and Evolution
For birds breeding in the Arctic, nest success is affected by the timing of nest initiation, which is partially determined by local conditions such as snow cover.
W. B. English   +31 more
doaj   +1 more source

Aerial Inventories of Waterfowl in Illinois and Estimation of Moist-soil Plant Seed Abundance for Waterfowl on Lands Managed by Illinois Department of Natural Resources [PDF]

open access: yes, 2008
Grant/Contract No: W-43-R 53-54-55Reports on progress and results of inventories of waterfowl along the Illinois and central Mississippi rivers during fall and winter and estimation of moist-soil plant seed abundance for waterfowl on lands managed by ...
Hine, Christopher S.   +4 more
core  

Shorebird Habitat Use and Nest-site Selection in the Playa Lakes Region [PDF]

open access: yes, 2005
Wetlands in the Playa Lakes Region (PLR) provide important habitats for wintering waterfowl, cranes, and both migrant and breeding shorebirds. Playa Lakes Region wetlands experience naturally fluctuating hydroperiods but are exposed to anthropogenic ...
Conway, Warren C.   +2 more
core   +2 more sources

Microbial influence on the formation and subsequent changes of vertebrate tracks: field experiments on present‐day coastal sediments

open access: yesSedimentology, EarlyView.
ABSTRACT The presence of microbial mats is often invoked to explain the good preservation of vertebrate tracks, because they can cover and biostabilize such structures. However, microbial influence on the sediment properties when the track is made and on the track characteristics has not been so thoroughly analysed.
Isabel Emma Quijada   +4 more
wiley   +1 more source

Abundance and habitat use estimates show Lesser Yellowlegs (Tringa flavipes) breed in high numbers in interior Alaska

open access: yesAvian Conservation and Ecology, 2022
Lesser Yellowlegs (Tringa flavipes) abundance has declined by approximately 75% across North America since 1970. Despite this dramatic decline, Lesser Yellowlegs are infrequently studied on their breeding grounds and have rarely been studied in the ...
Ellen C. Martin   +3 more
doaj  

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1406-1462, June 2026.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

Identifying and Quantifying Conflicts Between Humans and Terrestrial Mammals in Great Britain

open access: yesMammal Review, Volume 56, Issue 2, June 2026.
We conducted a literature review to identify conflicts between humans and terrestrial mammals in Great Britain. A modified Generic Impact Scoring System was applied to all conflicts so that mammals could be ranked according to their level of impact to help identify the most damaging species and to aid decision‐making. ABSTRACT Introduction Interactions
Kate L. Palphramand   +3 more
wiley   +1 more source

A Bioenergetics Approach to Setting Conservation Objectives for Non-Breeding Shorebirds in California’s Central Valley

open access: yesSan Francisco Estuary and Watershed Science, 2017
https://doi.org/10.15447/sfews.2017v15iss1art2An extensive network of managed wetlands and flooded agriculture provides habitat for migrating and wintering shorebirds in California’s Central Valley.
Kristen E. Dybala   +5 more
doaj  

Rapid recreation assessment: a tool to assess visitor use and associated impacts at coastal and marine protected areas [PDF]

open access: yes, 2006
As more people discover coastal and marine protected areas as destinations for leisure-time pursuits, the task of managing coastal resources while providing opportunities for high quality visitor experiences becomes more challenging.
Denny, Christine, Fish, Thomas E.
core  

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