Spatial and temporal fluctuations in resource availability have led to the evolution of varied
migration patterns. In order to appropriately time movements in relation to resources …

Twice‐a‐year migrations, one in autumn and the other in spring, occur within a discrete time
window with striking alterations in the behavior and physiology, as regulated by the …

Migration, a bird's metabolic apex, depends primarily on the liver and muscle for fuel
mobilization and endurance flight. In migratory redheaded buntings, adaptive increase in …

Birds seasonally switch from one life history state (LHS) to another to maximize their fitness.
Accordingly, they exhibit distinct differences in their physiological and behavioral …

This study investigated the molecular changes associated with neural plasticity in
photoperiodic induction of spring migration in intact and castrated redheaded bunting …

Background Many vertebrates distinguish between short and long day lengths using
suprachiasmatic nuclei (SCN). In birds particular, the mediobasal hypothalamus (MBH) is …

New Findings What is the central question of this study? What are the molecular
underpinnings of seasonal metabolic plasticity during spring and autumn migrations in …

The vast majority of what is known about migration comes from studies of obligate migration—
regular and predictable “to-and-fro” seasonal movements. Much less is known about …

This article is part of a Special Issue “Energy Balance”. Male white-crowned sparrows,
Zonotrichia leucophrys gambelii, were studied to investigate roles of natural day length and …

Present study examined the expression of brain peptides associated with the reproduction
and energy homeostasis (GnRH/GnIH, NPY/VIP), and assessed their possible functional …