Erich R Eberts, Christopher G Guglielmo, Kenneth C Welch Jr
Ruby-throated hummingbirds switch from using torpor to survive nighttime energy emergencies in the breeding season to using it to spare fat stores and gain premigratory mass in the late summer.
Charline Sophie Pinna, Maëlle Vilbert ... Marianne Elias
Wing transparency in mimetic butterflies and moths is achieved by an unexpected diversity of structural features, and both structures and light transmission properties of wings are under selection for convergence.
Barbara C Klump, James JH St Clair, Christian Rutz
Animals’ tool-handling behaviour can be used to make inferences about the value they ascribe to different tool types, unlocking considerable research potential for observational and experimental studies across diverse species.
Gabriele Valentini, Theodore P Pavlic ... Takao Sasaki
Ephemeral leadership between differently experienced birds regulates the balance between exploration and exploitation over successive homing flights in a manner that facilitates the accumulation of route innovations.
A novel mathematical modeling framework for antibiotic-resistant bacteria combining within-host microbiome-pathogen interactions with population-level pathogen epidemiology, demonstrating how antibiotic consumption and ecological competition come together to drive the spread of resistance.
Echolocating toothed whales can detect and react to sudden prey movements during close approaches with speeds similar to ultra-fast tracking responses in human vision.