Last week I mentioned my birding group at Pee Dee National Wildlife Refuge enjoyed views of a first-year male orchard oriole. I received several inquiries as to how I knew how old the bird was. Many ...

Many shorebirds show elaborate breeding displays that include aerial flights and ground displays accompanied by song. The mate attraction hypothesis suggests that breeding displays function to attract ...

Figure 1: Sites visited by male pectoral sandpipers caught in Barrow during the breeding season. Figure 2: Descriptors of site sampling behaviour by male pectoral sandpipers during two breeding ...

Male-male reproductive competition occurs in many animal societies and can be costly, both through aggression or energy expenditure prior to mating and lost paternity. In most cooperative breeders, ...

The Brazilian male frog is loyal to two female mates during the breeding season, despite being surrounded by a 'harem' of females, a new study reveals. Thoropa taophora frogs, native to the Brazilian ...

A species of frog native to the Brazilian Atlantic rainforest is the first amphibian found to mate exclusively with the same two females throughout its breeding season. Fábio de Sá at São Paulo State ...