territorial aggressive behavior

BACKGROUND Male song sparrows (Melospiza melodia) are territorial year-round; however, neuroendocrine responses to simulated… (More)

Serotonin is an important neurotransmitter in the regulation of social interactions in many animals. Correlative studies in… (More)

A combination of laboratory and field investigations of birds has shown that expression of behavior such as territorial… (More)

Many male animals are territorial in the breeding season, when plasma testosterone (T) levels are high, and nonterritorial in the… (More)

Testosterone (T) mediates a trade-off, or negative correlation, between paternal behavior and aggression in several seasonally… (More)

Testosterone (T) regulates avian behaviors such as song and aggression during the breeding season. However, the role of T in year… (More)

Male song sparrows (Melospiza melodia morphna) defend territories throughout the year in western Washington State. In the… (More)

Previous experiments demonstrate that lesions of the septum produce opposite effects on intraspecific male aggression in the… (More)

A number of studies have implicated the neurohypophyseal peptides oxytocin and vasopressin in the central mediation of complex… (More)

Male song sparrows (Melospiza melodia morphna) of western Washington State show year-round territoriality. Although territorial… (More)