About pace: How variations in method and definition affect quantification of pacing in bears?

Authors: Laura M Bernstein‐Kurtycz, Kayla G Wiatroski, Austin Leeds, Kristen E Lukas

Publication/Journal: Zoo Biology

Keywords: bears, pacing, stereotypy

2022

Agonistic behavior and feeding competition in the largest piranha species, Pygocentrus piraya, in a zoo

Authors: Ronald G Oldfield, Josie E Thal, Praanjal Das, Nick J Zarlinga, Kristen E Lukas, Jason D Wark

Publication/Journal: Journal of Ethology

Keywords: agonistic behavior, feeding competition, piranha, zoo

2022

Distinguishing mobility and immobility when establishing species‐specific activity budgets: A case study with gorillas (Gorilla berengei berengei and Gorilla gorilla gorilla)

Authors: Jean D Nsekanabo, Austin Leeds, Winnie Eckardt, Deogratias Tuyisingize, Aisha Nyiramana, Kristen E Lukas

Publication/Journal: Zoo Biology

Keywords:

2022

Do zoo animals use off‐exhibit areas to avoid noise? A case study exploring the influence of sound on the behavior, physiology, and space use of two pied tamarins (Saguinus bicolor)

Authors: Jason D Wark, Mandi W Schook, Patricia M Dennis, Kristen E Lukas

Publication/Journal: American Journal of Primatology

Keywords: animal welfare, noise, tamarins, zoo

2022

Urinary oxytocin and cortisol concentrations vary by group type in male western lowland gorillas (Gorilla gorilla gorilla) in North American zoos

Authors: Austin Leeds, Mandi W Schook, Patricia M Dennis, Tara S Stoinski, Mark A Willis, Kristen E Lukas

Publication/Journal: Primates

Keywords: animal welfare, gorillas, zoos

2022

‘Bearly’ Changing with the Seasons: Bears of Five Species Show Few Behavioral Changes Across Seasons and at Varying Visitor Densities

Authors: L.M. Bernstein-Kurtycz, D. Koester, R. Snyder, J. Vonk, M.A. Willia, K. E. Lukas

Publication/Journal: Animal Behavior and Cognition

Keywords: bear behavior, COVID-19, crowd size, daily attendance, season, visitor effect

2021

Comparison of Two Different Feather Sampling Methods to Measure Corticosterone in Wild Greater Flamingos (Phoenicopterus roseus) and Wild Mallards (Anas platyrhynchos)

Authors: Marielu Voit, Katrin Baumgartner, Lorenzo von Fersen, Roswitha Merle, Lukas Reese, Mechthild Wiegard, Hermann Will, Oriol Tallo-Parra, Annaïs Carbajal, Manel Lopez-Bejar

Publication/Journal: Animals

Keywords: animal welfare, comparative study, cut feathers, feather corticosterone, greater flamingo, less invasive, mallards, plucked feathers, refinement, sex comparison, wild birds

2021

The Effects of Choice-Based Design and Management on the Behavior and Space Use of Zoo-Housed Amur Tigers (Panthera tigris altaica)

Authors: Charles P Ritzler, Kristen E Lukas, Laura M Bernstein-Kurtycz, Diana C Koester

Publication/Journal: Journal of Applied Animal Welfare Science

Keywords: carnivore, design, environmental choice, space use, tiger

2021

Feather Corticosterone Measurements and Behavioral Observations in the Great White Pelican (Pelecanus onocrotalus) Living under Different Flight Restraint Conditions in German Zoos

Authors: Gudrun Haase, Katrin Baumgartner, Lorenzo von Fersen, Roswitha Merle, Mechthild Wiegard, Hermann Will, Lukas Reese, Oriol Tallo-Parra, Annais Carbajal, Manel Lopez-Bejar

Publication/Journal: Animals

Keywords: behavior, clipping feathers, deflighting, feather corticosterone, great white pelican, pinioning, zoo animal welfare

2021

Feather Corticosterone Measurements of Greater Flamingos Living under Different Forms of Flight Restraint

Authors: Lukas Reese, Katrin Baumgartner, Lorenzo von Fersen, Roswitha Merle, Mechthild Ladwig-Wiegard, Hermann Will, Gudrun Haase, Oriol Tallo-Parra, Annaïs Carbajal, Manel Lopez-Bejar

Publication/Journal: Animals

Keywords: animal welfare, bird, deflighting, feather corticosterone, greater flamingo, pinioning

2020

Our Goals