Search

2022-04-19

Ying Shan Doris Zhang, Kimberly Noels

2021-06-30

Ying Shan Doris Zhang, Kimberly Noels, Heather Young Leslie, Nigel Mantou Lou

Objectives: Early in the COVID-19 pandemic, Chinese and non-Chinese Canadians exhibited differential support for public mask use, which may have implications for public health and interethnic relations. Such differences were primarily attributed to variations in ethnic norms and practices by...

2020-02-27

Congdon, Jenna V., Hahn, Allison H., Campbell, Kimberley A., Scully, Erin N., Yip, Daniel A., Bayne, Erin M., Sturdy, Christopher B.

Smaller owls and hawks are high-threat predators to small songbirds, like chickadees, in comparison to larger avian predators due to smaller raptors’ agility (Templeton et al. in Proc Natl Acad Sci 104:5479–5482, 2005). The current literature focuses only on high- and low-threat predators. We...

2022-05-06

Connor T. Lambert, Prateek K. Sahu, Christopher B. Sturdy, Lauren M. Guillette

Among-individual variation in performance on cognitive tasks is ubiquitous across species that have been examined, and understanding the evolution of cognitive abilities requires investigating among-individual variation because natural selection acts on individual differences. However, relatively...

2016-01-01

Campbell, Kimberley A., Sturdy, Christopher B., Hahn, Allison H., Congdon, Jenna V.

Sex differences have been identified in a number of black-capped chickadee vocalizations and in the chick-a-dee calls of other chickadee species [i.e., Carolina chickadees (Poecile carolinensis)]. In the current study, 12 acoustic features in black-capped chickadee chick-a-dee calls were...

2019-01-01

McMillan, Neil, Spetch, Marcia L.

In a two-stimulus visual discrimination choice task with a reversal in reward contingencies midway through each session, pigeons produce a surprising number of anticipatory errors (i.e., responding to the second-correct stimulus before the reversal) based on failure to inhibit timing-based...

2020-01-01

Andres Camacho-Alpízar, Andrea S. Griffin, Lauren M. Guillette

A recent paper by Chen et al. 2019 found that female budgerigars (Melopsittacus undulatus) show a preference for males that are successful problem solvers. Is this result sufficient to conclude that mate choice influences the evolution of cognitive abilities? Here, we consider what we currently...

2015-01-01

Neil McMillan, Allison H. Hahn, Marcia L. Spetch, Christopher B. Sturdy

Though birds have traditionally and colloquially been considered less cognitively complex than mammals, and especially primates, more recent research has consistently refuted these assumptions. We argue that the impressive abilities of birds to navigate and communicate require considerable...

2024-05-01

Elena Nicoladis, Anna Petursdottir, and Christopher B. Sturdy

To what extent can human language learning be described, explained, and predicted from basic learning principles? Following the Skinner/Chomsky debate, many scholars avoided invoking basic learning principles, concentrating instead on cognitive approaches. We argue that these cognitive approaches...

2020-07-01

Montenegro, Carolina, Service, William D., Scully, Erin N., Campbell, Kimberley A., Sturdy, Christopher B

Individual recognition is a social behavior that occurs in many bird species. A bird’s ability to discriminate among familiar and unfamiliar conspecifics is critical to avoid wasting resources such as time and energy during social interactions. Black-capped Chickadees (Poecile atricapillus) are...