218 Social status alters immune regulation and response to infection in macaques.

217 A Mighty Claw: Pinching Force of the Coconut Crab, the Largest Terrestrial Crustacean.

216 Sexual display complexity varies non-linearly with age and predicts breeding status in greater flamingos.

215 Radiocarbon dating of seized ivory confirms rapid decline in African elephant populations and provides insight into illegal trade.

214 Annual 10-Month Aerial Life Phase in the Common Swift Apus apus.

213 Mood and personality interact to determine cognitive biases in pigs.

212 How the sandfish lizard, Scincus scincus, prevents sand particles from entering its lungs.

211 The Odour of Sex: Sex-Related Differences in Volatile Compound Composition among Barn Swallow Eggs Carrying Embryos of Either Sex.

210 Marine plastic debris emits a keystone infochemical for olfactory foraging seabirds.

209 Wild monkeys flake stone tools.

208 How seabirds plunge-dive without injuries.

207 Ceropegia sandersonii Mimics Attacked Honeybees to Attract Kleptoparasitic Flies for Pollination.

206 Orthographic processing in pigeons (Columba livia).

205 Great apes anticipate that other individuals will act according to false beliefs.

204 Associative Mechanisms Allow for Social Learning and Cultural Transmission of String Pulling in an Insect.

203 Tropical bat as mammalian model for skin carotenoid metabolism.

202 Bats perceptually weight prey cues across sensory systems when hunting in noise.

201 Metagenomic sequencing of dung beetle intestinal contents directly detects and identifies mammalian fauna.

200 Discovery of species-wide tool use in the Hawaiian crow.

199 Captivity humanizes the primate microbiome.

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