Avian duetting is an unusual but taxonomically widespread phenomenon, occurring in over
400 species, representing 40% of bird families. Duets vary in form from loosely overlapping …

Tropical birds offer unique opportunities to test ecological and evolutionary theory because
their life history traits are so diverse and different from temperate zone models upon which …

In territorial songbirds both sexes depend on possession of a territory, yet its defence is
traditionally regarded as the domain of male birds. Studies on duetting species have …

The spring dawn and dusk chorus of birds is a widespread phenomenon, yet its origin
remains puzzling. We propose that a dawn and dusk chorus will inevitably arise if two …

Blood sampling is often critical for answering a variety of questions about wild birds.
However, it is important to assess the impacts, if any, of blood collection on wild birds. Here …

770—PeRSPectiveS in oRnitHology— auK, vol. 125 (2001: 39) stated that “while extra-pair
mating systems are the norm for temperate zone passerines, this is not true for tropical …

Mated birds of many species vocalize together, producing duets. Duetting behavior occurs at
two levels of organization: the individual level and the pair level. Individuals initiate …

The traditionally-defined wren genus Thryothorus is notable for its diversity of singing styles
with some species producing highly coordinated duets or choruses in various formats while …

Seasonal variation in animal signalling behaviour has been well documented and has
contributed much to our understanding of male signals. In contrast, we know little about …

Playback experiments involve the broadcast of natural or synthetic sound stimuli and
provide a powerful tool for studying acoustic communication in birds. Playback is a valuable …