Results 41 to 50 of about 432 (147)

Increased numbers and productivity of Double-crested Cormorants, Phalacrocorax auritus, on Lake Ontario

The Canadian field-naturalist, 1986
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Price, Iola M., Weseloh, D. Vaughn.
openaire   +2 more sources

Bone Mineral Density of Willow Ptarmigan (Lagopus lagopus) as a Potential Taphonomic Factor in Skeletal Part Attrition

International Journal of Osteoarchaeology, Volume 35, Issue 5, Page 284-294, September/October 2025.
ABSTRACT Agents of taphonomy can bias skeletal parts and the frequency of bones in archaeological sites. An important factor to consider is the possible effect of bone density‐mediated attrition on archaeornithological assemblages. We scanned willow ptarmigan (Lagopus lagopus) specimens using a Lunar iDXA and an enCcore small animal body add‐on to ...
Frank J. Dirrigl Jr., Samuel R. Buchanan   +1 more
wiley   +1 more source

Sinoatrial Contracaeciasis in Johnny Darters (Etheostoma nigrum) and Plains Topminnow (Fundulus sciadicus) From the South Platte Drainage, Colorado

Aquaculture, Fish and Fisheries, Volume 5, Issue 4, August 2025.
ABSTRACT Intra‐sinoatrial nematodes were incidentally recognized in wild‐caught Colorado Johnny Darters (Etheostoma nigrum, JD) in 2020–2021 and in Colorado Plains Topminnow (Fundulus sciadicus, PTM) in 2023‐2024. PTM and JD were evaluated histologically.
Paula Andrea Schaffer, Ashley K. McGrew, Jessica Henley, Catherine M. Adams, Dana L. Winkelman, Ryan M. Fitzpatrick, Pete Cadmus   +6 more
wiley   +1 more source

Observations on the Double-crested Cormorant (Phalacrocorax auritus) on Lake Manitoba

The Canadian field-naturalist, 1927
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Development of methods for avian oil toxicity studies using the double crested cormorant ( Phalacrocorax auritus )

Ecotoxicology and Environmental Safety, 2017
Oral and external dosing methods replicating field exposure were developed using the double crested cormorant (DCCO) to test the toxicity of artificially weathered Deepwater Horizon Mississippi Canyon 252 oil. The majority of previous oil dosing studies conducted on wild-caught birds used gavage methods to dose birds with oil and determine toxicity ...
Cunningham, Fred L., Dean, Karen, Hanson-Dorr, Katie C., Harr, Kendal, Healy, Kate, Horak, Katherine E., Link, Jane, Shriner, Susan A., Bursian, Steve J., Dorr, Brian S   +9 more
openaire   +3 more sources

Climate‐related drivers of migratory bird health in the south‐central USA

Biological Reviews, Volume 100, Issue 3, Page 1272-1293, June 2025.
ABSTRACT Migratory birds are species of concern that play important ecological roles while also supporting recreational opportunities for the hunting and birdwatching public. Direct and indirect effects of climate variability, extremes, and change on migratory bird health manifest at the individual, population, species, and community levels.
Renee A. McPherson, Katrina E. Alger, Erik Hofmeister   +2 more
wiley   +1 more source

Breeding bird response to adaptive multi‐paddock and continuous grazing practices in Southeastern United States

Ecosphere, Volume 15, Issue 12, December 2024.
Abstract Grassland bird populations are declining steeply, reflecting the degradation and loss of native grassland habitats. To assess how grazing management affects declining grassland bird populations, we compared breeding avifaunal communities in adaptive multi‐paddock (AMP) grazed and continuously grazed (CG) pastures in the Southeastern United ...
Michael J. McGraw, Steven I. Apfelbaum, Ry Thompson, Fugui Wang, Michael A. Szuter, Richard Teague, Peter Byck, Russ Conser   +7 more
wiley   +1 more source

Stock‐specific spatial overlap among seabird predators and Columbia River juvenile Chinook Salmon suggests a mechanism for predation during early marine residence

Marine and Coastal Fisheries, Volume 16, Issue 6, December 2024.
Abstract Objective Because predation is thought to be the primary source of natural mortality for juvenile salmon first entering the ocean, we sought to identify regions where, on average, stock‐specific spatial overlap between the distribution of threatened and endangered juvenile Chinook Salmon Oncorhynchus tshawytscha and abundant fish‐eating ...
Jeannette E. Zamon, Nick Tolimieri, Brandon E. Chasco, Mary E. Hunsicker, Donald M. Van Doornik, Brian J. Burke, David J. Teel, Elizabeth M. Phillips   +7 more
wiley   +1 more source

Conflicting perspectives on ecosystem conservation in a cultivated floodplain: The role of science and the challenge of pluralism in decision‐making in Lac Saint‐Pierre (Quebec, Canada)

Environmental Policy and Governance, Volume 34, Issue 5, Page 476-489, October 2024.
Abstract By generating and explaining facts, science holds an important role in environmental policy decision‐making. However, scientific knowledge is often framed as objective and neutral in policy debates, which can be challenged by stakeholders who have a different view of the issue.
Ann Lévesque, Jean‐François Bissonnette, Aaron Vansintjan, Jérôme Dupras   +3 more
wiley   +1 more source

Displacement of a large Double-crested Cormorant, Phalacrocorax auritus, colony following human disturbance

The Canadian field-naturalist, 1998
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Cairns, D. K., Dibblee, Randall, Daoust, Pierre-Yves   +2 more
openaire   +1 more source