Differences between temperate and tropical birds in seasonal acclimatization of thermoregulatory traits

2019 ◽  
Vol 50 (4) ◽  
Author(s):  
Henry S. Pollock ◽  
Jeffrey D. Brawn ◽  
Timothy J. Agin ◽  
Zachary A. Cheviron
Keyword(s):  
Tropical Birds ◽  
Seasonal Acclimatization

Testosterone in Tropical Birds: Effects of Environmental and Social Factors

2004 ◽  
Vol 164 (3) ◽  
pp. 327
Author(s):  
Goymann ◽  
Moore ◽  
Scheuerlein ◽  
Hirschenhauser ◽  
Grafen ◽  
...  
Keyword(s):  
Social Factors ◽  
Tropical Birds

scholarly journals Global change and tropical birds

Science ◽  
2016 ◽  
Vol 353 (6306) ◽  
pp. 1378-1379
Author(s):  
A. M. Sugden
Keyword(s):  
Global Change ◽  
Tropical Birds

scholarly journals Basal metabolism in tropical birds: latitude, altitude, and the ‘pace of life’

2014 ◽  
Vol 29 (3) ◽  
pp. 338-346 ◽  
Author(s):  
Gustavo A. Londoño ◽  
Mark A. Chappell ◽  
María del Rosario Castañeda ◽  
Jill E. Jankowski ◽  
Scott K. Robinson
Keyword(s):  
Basal Metabolism ◽  
Tropical Birds ◽  
Pace Of Life

scholarly journals A meta-analysis of global avian survival across species and latitude

2019 ◽  
Author(s):  
Micah N. Scholer ◽  
Matt Strimas-Mackey ◽  
Jill E. Jankowski
Keyword(s):  
Latitudinal Gradient ◽  
Meta Analysis ◽  
Survival Rates ◽  
Global Scale ◽  
Geographic Region ◽  
Passerine Birds ◽  
Tropical Birds ◽  
Model Predictions ◽  
Improved Model ◽  
Northern And Southern Hemispheres

AbstractTropical birds are purported to be longer lived than temperate species of similar size, but it has not been shown whether avian survival rates covary with a latitudinal gradient worldwide. Here, we perform a global-scale meta-analysis to investigate the extent of the latitudinal survival gradient. We modeled survival as a function of latitude for the separate northern and southern hemispheres, and considered phylogenetic relationships and extrinsic (climate) and intrinsic (life history) predictors hypothesized to moderate these effects. Using a database of 1,004 estimates from 246 studies of avian survival, we demonstrate that in general a latitudinal survival gradient exists in the northern hemisphere, is dampened or absent for southern hemisphere species, and that survival rates of passerine birds largely account for these trends. We found no indication that the extrinsic climate factors were better predictors of survival than latitude alone, but including species’ intrinsic traits improved model predictions. Notably, species with smaller clutch size and larger body mass showed higher survival. Our results illustrate that while some tropical birds may be longer lived than their temperate counterparts, the shape of the latitude-survival gradient differs by geographic region and is strongly influenced by species’ intrinsic traits.

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