Protein content of diets dictates the daily energy intake of a free-ranging primate
Parasitic cowbirds may defeat host defense by causing rejecters to misimprint on cowbird eggs
Nutritional enrichment increases courtship intensity and improves mating success in male spiders
Vigilance and predation of a forest-living bird species depend on large-scale habitat structure
Beyond waist–hip ratio
Preexisting behavior renders a mutation adaptive
Maternal weight, offspring competitive ability, and the evolution of communal breeding
Reproductive effort in biparental care
An avian eavesdropping network
Secondary sexual trait size reveals competitive fertilization success in Drosophila bipectinata Duda
Brood size in a polyembryonic parasitoid wasp is affected by relatedness among competing larvae
Female reproductive tactics in a sex-role reversed pipefish
Cues, concessions, and inheritance
A behavioral syndrome linking courtship behavior toward males and females predicts reproductive success from a single mating in the hissing cockroach, Gromphadorhina portentosa
Aggressive Ural owl mothers recruit more offspring
A possible case of contemporary selection leading to a decrease in sexual plumage dimorphism in a grassland-breeding shorebird
Hunting efficiency and predation risk shapes the color-associated foraging traits of a predator
Queenless colonies of the Asian red dwarf honey bee (Apis florea) are infiltrated by workers from other queenless colonies
Nestling begging increases predation risk, regardless of spectral characteristics or avian mobbing
Personality traits in wild starlings
Who Cares? Between-group variation in alloparental caregiving in sperm whales
Variation in dominance hierarchies among group-living animals
Condition-dependent mate choice and its implications for population differentiation in the wolf spider Pirata piraticus
The influence of the acoustic community on songs of birds in a neotropical rain forest
Behavior of kestrels feeding on frugivorous lizards
Sex-specific parental strategies according to the sex of offspring in the Adélie penguin
Foraging theory and partial consumption in a tardigrade–nematode system
Condition-dependent alternative mating tactics in a sexually cannibalistic wolf spider
Song types, song performance, and the use of repertoires in dark-eyed juncos (Junco hyemalis)
Mate choice copying and mate quality bias