Results 21 to 30 of about 1,390,933 (138)

Cormorant abundance, diet, and foraging habits in Arizona

Journal of Field Ornithology, 2022
In Arizona, USA, Double-crested Cormorants (Nannopterum auritum) primarily overwinter, whereas Neotropic Cormorants (N. brasilianum) are common residents year round.
Larisa E. Harding, Jacob I. Mesler
doaj  

Fine scale characteristics of catfish aquaculture ponds influencing piscivorous avian species foraging use in the Mississippi Delta.

PLoS ONE, 2020
Piscivorous avian species are the main source of catfish depredation at aquaculture facilities in Mississippi, resulting in the economic loss of millions of dollars every year.
Paul C Burr, Jimmy L Avery, Garrett M Street, Bronson K Strickland, Brian S Dorr   +4 more
doaj   +1 more source

Comparison of Sampling Strategies to Estimate Abundance of Double-Crested Cormorants in Western Mississippi

Human-Wildlife Interactions, 2017
We compared 2 sampling strategies designed to estimate abundance of double-crested cormorants (Phalacrocorax auritus, hereafter cormorants) on aquaculture ponds in western Mississippi.
Aaron T. Pearse , Brian S. Dorr, Stephen J. Dinsmore, Richard M. Kaminski   +3 more
doaj   +1 more source

Double-Crested Cormorant Disturbance: Restoration Potential for a Forested Urban Park

, 2019
This paper examines the relationship between double-crested cormorant nesting activity and urban deforestation in Toronto’s Tommy Thompson Park (TTP).
Danielle Marcoux-Hunter (14521180)
core   +1 more source

Double‐crested cormorant distribution on catfish aquaculture in the Yazoo River Basin of Mississippi

Wildlife Society Bulletin, 2012
Estimating the catfish aquaculture production losses that can be attributed to double‐crested cormorants (Phalacrocorax auritus) has proved problematic because knowledge of the distribution of cormorants on catfish aquaculture is lacking.
Brian S. Dorr, Loren W. Burger, Scott C. Barras, Kristina Casscles Godwin   +3 more
doaj   +1 more source

Field evaluation of artificial intelligence early warning for bird depredation at carp ponds

Wildlife Society Bulletin, EarlyView.
An artificial intelligence‐based early‐warning workflow for bird depredation at a commercial carp farm in Japan. Abstract Piscivorous birds such as the great cormorant (Phalacrocorax carbo) can cause substantial losses in pond aquaculture, yet continuous on‐site vigilance is difficult under labor shortages.
Shigeru Ichiura, Tomohiro Mori
wiley   +1 more source

Waterbird zoogeochemical effects shape wetland nutrient dynamics and algal communities in Laurentian Great Lakes coastal freshwater wetlands

Journal of Animal Ecology, EarlyView.
Distinct waterbird species influence nutrient cycling through guano contributions in Great Lakes coastal wetlands. Waterbird‐derived nutrients favour distinct algal communities and wetland sediments rapidly remove waterbird nutrients via biogeochemical processes.
Taylor C. Michael, Paisley Kostick, Matthew A. Wuensch, David M. Costello   +3 more
wiley   +1 more source

Recent Population Size, Trends, and Limiting Factors for the Double-Crested Cormorant in Western North America [PDF]

The status of the double-crested cormorant (Phalacrocorax auritus) in western North America was last evaluated during 1987–2003. In the interim, concern has grown over the potential impact of predation by double-crested cormorants on juvenile salmonids ...
Capitolo, Phillip J., Carter, Harry R., Roby, Daniel D., Courtot, Karen N., Collis, Ken, Adkins, Jessica Y., Lyons, Donald E., Shuford, W. David   +7 more
core   +6 more sources

Using species distribution models to define nesting habitat of the eastern metapopulation of double‐crested cormorants

Ecology and Evolution, 2017
When organisms with similar phenotypes have conflicting management and conservation initiatives, approaches are needed to differentiate among subpopulations or discrete groups.
Kate L. Sheehan, Samuel T. Esswein, Brian S. Dorr, Greg K. Yarrow, Ron J. Johnson   +4 more
doaj   +1 more source

The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds

Journal of Anatomy, EarlyView.
The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Takumi Akeda, Shin‐ichi Fujiwara
wiley   +1 more source