Article
Behavioral Sciences
Steven C. Kyle
Summary: The study showed that Carolina chickadees and tufted titmice take fewer seeds when the eyes of a predator model are visible, compared to when the eyes are covered. Chickadees also give more introductory notes in their calls when the eyes of the predator model are uncovered, suggesting they use eyes of predators to determine predation risk.
Article
Agriculture, Dairy & Animal Science
Li Zhang, Jiangping Yu, Chao Shen, Dake Yin, Longru Jin, Wei Liang, Haitao Wang
Summary: Geographic variation in alarm calls of Japanese tits was studied in three populations in China. While the populations shared some note types, each also had unique note types for warning about intruders. Significant differences in the frequency and duration parameters of shared note types among populations suggest adaptations to their environments. This indicates that population differences in the note levels of bird alarm calls do exist.
Article
Ornithology
Samuel Koch, Lindsey A. Walters
Summary: The study found that male Carolina Chickadees removed more fecal sacs per hour than females. However, this was due to their more frequent nest visits. The energy spent on fecal sac removal by parents is closely connected to their investment in nestling provisioning visits.
WILSON JOURNAL OF ORNITHOLOGY
(2021)
Article
Psychology, Biological
Kimberley A. Campbell, Marisa Hoeschele, Daniel Mann, Jenna Congdon, Erin N. Scully, Shannon K. Mischler, Carolina Montenegro, William D. Service, Christopher B. Sturdy
Summary: Through a series of experiments, researchers found that black-capped chickadees in the field respond differently to vocalizations with different note orders, and they can distinguish syntactically-ordered and incorrectly-ordered "chick-a-dee" calls. The results showed that chickadees preferred to perch on the silent branch rather than the branches that played natural or scrambled-order "chick-a-dee" calls, and they visited the branch associated with natural-order calls more frequently. This suggests that black-capped chickadees are capable of perceiving and acting upon the categories of natural-versus scrambled-ordered calls.
BEHAVIOURAL PROCESSES
(2023)
Article
Ornithology
Mark Stanback, Gene Vaughan, Zane Libke
Summary: According to the MacArthur-Wilson model, species richness on islands is influenced by island size and distance to the mainland. This study installed nest boxes on 37 islands in Lake Norman, North Carolina, to examine the nesting behavior of Carolina Chickadees. The results showed that island size, distance to the mainland, and their interaction did not explain the presence of breeding chickadees on the islands.
WILSON JOURNAL OF ORNITHOLOGY
(2022)
Article
Behavioral Sciences
Jodilyn R. Jenkins, Ian G. Pope, Madeline A. Dykstra, Jennifer J. Jenkins, Cheryl R. Dykstra, Kelly A. Williams
Summary: Black-capped chickadees respond more strongly to predator models than predator calls during foraging in the wild. The activity and exploration scores from behavioral assays predict individual behavior in the presence of a predator during foraging experiments. Highly active and fast exploring birds are less willing to visit the feeder when a predator is present.
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2023)
Article
Behavioral Sciences
D. L. Book, Todd M. Freeberg
Article
Biology
Arik Kershenbaum, Todd M. Freeberg, David E. Gammon
JOURNAL OF THEORETICAL BIOLOGY
(2015)
Article
Psychology, Biological
Hwayoung Jung, Todd M. Freeberg
Article
Psychology, Biological
Hwayoung Jung, Atira Sherrod, Steven LeBreux, Joshua M. Price, Todd M. Freeberg
Article
Behavioral Sciences
Brittany A. Coppinger, Stephen A. Kania, Jeffrey R. Lucas, Kathryn E. Sieving, Todd M. Freeberg
Article
Behavioral Sciences
Todd M. Freeberg
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2021)
Article
Psychology, Biological
Scott A. Benson, Jeffrey R. Kelly, Cecilia Kullberg, Tatjana Krama, Jolanta Vrublevska, Indrikis Krams, Todd M. Freeberg
Summary: This study reveals the differences in risk sensitivity and response behaviors among different species in mixed-species flocks of birds. Nuclear species are more likely to alter their foraging behavior based on predator orientation, while satellite species are more sensitive to the mere presence of predators.
Article
Behavioral Sciences
Todd M. Freeberg
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2022)
Article
Behavioral Sciences
Todd M. Freeberg
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2022)
Article
Biology
Todd M. Freeberg, Brittany A. Coppinger, Shannon K. Eppert
Summary: Individuals of different species can benefit from associations with other species in mixed-species groups (MSGs). In this study, experimental flocks of chickadees and titmice were provided with novel feeder tasks in semi-natural aviary environments. The results showed that the composition of the MSGs influenced the success of the flocks, with titmouse flocks having a higher proportion of titmice and chickadee flocks performing better with a higher proportion of titmice. Further research is needed to understand the socio-ecological influences on MSG size and composition and their impact on individual behavior.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Biology
B. A. Coppinger, N. V. Carlson, T. M. Freeberg, K. E. Sieving
Summary: Dominance interactions and hierarchies are complex social structures formed by repeated interactions between individuals. Most studies focused on single-species groups, but animals constantly interact with individuals of other species. The presence or behavior of other species can shape behavior and social interactions in mixed-species groups, which is important for understanding social behavior. More research is needed to understand dominance interactions in mixed-species groups, considering the dynamics of changing group size and composition over different time frames.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Editorial Material
Biology
Nora V. Carlson, Todd M. Freeberg, Eben Goodale, Anne Heloise Theo
Summary: Traditionally, papers on mixed-species groups were published in taxa-specific journals. However, it is more common to find mixed-species systems in aggregative (non-moving) systems, such as amphibians and invertebrates. This special issue aims to change the perception that mixed-species phenomena are niche topics and explore how a mixed-species perspective can alter our understanding of important ecological patterns and processes. Contributions in the special issue demonstrate how the mixed-species perspective influences invasion ecology, island biogeography, keystone species, mimicry, predator eavesdropping, and more. Rather than seeking synthesis, the special issue celebrates the wide range of taxa and concepts in the field of mixed-species groups.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Behavioral Sciences
Todd M. Freeberg, Sylvain Fiset
Summary: In this study, researchers found that the Argentinian wood roach, Blaptica dubia, benefits from being in a social group when it comes to choosing shelters. The roaches in groups were more likely to choose the darker shelter than solitary individuals, suggesting that social context plays a role in their decision-making regarding shelter choice.
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2023)
Article
Ornithology
Tatjana Krama, Ronalds Krams, Sergejs Popovs, Giedrius Trakimas, Markus J. Rantala, Todd M. Freeberg, Indrikis A. Krams
Summary: This study investigates the effect of predictable food resources on the body mass and survival strategies of wintering Great Tits. The results show that urban birds with regular access to high energy food have higher body mass but lower survival rates compared to birds with irregular access to food.
Article
Behavioral Sciences
Todd M. Freeberg
Summary: This essay discusses the main arguments of Zing-Yang Kuo's article and how they have extended into today's thinking and empirical work on behavioral development. It emphasizes the need to study neophenotypes to understand the range of behavioral possibilities and to assess nonobvious sources of experience in the development of species-typical behavior.
JOURNAL OF COMPARATIVE PSYCHOLOGY
(2021)