Seasonal Climate Impacts on Vocal Activity in Two Neotropical Nonpasserines

Climatic conditions represent one of the main constraints that influence avian calling behavior. Here, we monitored the daily calling activity of the Undulated Tinamou (Crypturellus undulatus) and the Chaco Chachalaca (Ortalis canicollis) during the dry and wet seasons in the Brazilian Pantanal. We...

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Bibliographic Details
Published in:Diversity (Basel) 2021-07, Vol.13 (7), p.319
Main Authors: Pérez-Granados, Cristian, Schuchmann, Karl-L.
Format: Article
Language:English
Subjects:
Acoustics
Air temperature
Animal behavior
Birds
Breeding
call
Calling behavior
Climate
Climate effects
Climate prediction
Climatic conditions
Cracidae
Crypturellus undulatus
Dry season
Females
High temperature
Kaleidoscope Pro
Ortalis canicollis
Pantanal
Rainfall
Rainy season
Seasonal variations
Seasons
Species
temperature
Vocalization behavior
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Summary:Climatic conditions represent one of the main constraints that influence avian calling behavior. Here, we monitored the daily calling activity of the Undulated Tinamou (Crypturellus undulatus) and the Chaco Chachalaca (Ortalis canicollis) during the dry and wet seasons in the Brazilian Pantanal. We aimed to assess the effects of climate predictors on the vocal activity of these focal species and evaluate whether these effects may vary among seasons. Air temperature was positively associated with the daily calling activity of both species during the dry season. However, the vocal activity of both species was unrelated to air temperature during the wet season, when higher temperatures occur. Daily rainfall was positively related to the daily calling activity of both species during the dry season, when rainfall events are scarce and seem to act as a trigger for breeding phenology of the focal species. Nonetheless, daily rainfall was negatively associated with the daily calling activity of the Undulated Tinamou during the wet season, when rainfall was abundant. This study improves our understanding of the vocal behavior of tropical birds and their relationships with climate, but further research is needed to elucidate the mechanisms behind the associations found in our study.
ISSN:1424-2818
1424-2818
DOI:10.3390/d13070319