For sexual selection to act on a given sex, there must exist variation in the reproductive
success of that sex as a result of differential access to mates or fertilisations. The …

The contribution of interspecific competition to structuring population and community
dynamics remains controversial and poorly tested. Interspecific competition has long been …

Female ornaments have long been considered non-functional, but a paradigm shift has
occurred over the 2 last decades. The adaptive nature of female ornaments is now widely …

Historically, studies of condition-dependent signals in animals have been male-centric, but
recent work suggests that female ornaments can also communicate individual quality (eg …

Carotenoid-based colouration plays an important role in sexual signaling in animals as an
honest indicator of individual quality during mate choice and competitive interactions …

In many avian species, a male's colorful feather ornaments are known to signal individual
quality and can serve as the basis for mate choice. Fewer studies have assessed whether …

Plumage and song are important signals used by birds to attract mates and repel rivals.
Divergence in sexual signals can lead to reproductive isolation among incipient species, but …

Many studies have shown that the plumage coloration of male birds can act as an honest
signal of quality, indicating benefits that a female could gain from pairing with a specific …

Plumage colouration serves a variety of functions for birds, including conspecific signalling,
crypsis, and predator–prey interactions. Though much research has been conducted on …

In dimorphic hummingbirds (Trochilidae), females exhibit variation in extent of male-like
ornamentation. Female Anna's Hummingbirds (Calypte anna) show substantial individual …