338 Female toads engaging in adaptive hybridization prefer high-quality heterospecifics as mates.

337 Sons accelerate maternal aging in a wild mammal.

336 Analysis of thousands of living and fossil marine animals suggests that resistance to extinction has led to high taxonomic richness.

335 Ultrasonic signals associated with different types of social behavior of mice.

334 The unique genetic adaptation of the Himalayan wolf to high-altitudes and consequences for conservation.

333 Small within the largest: brain size and anatomy of the extinct Neoepiblema acreensis, a giant rodent from the Neotropics.

332 Ocean sentinel albatrosses locate illegal vessels and provide the first estimate of the extent of nondeclared fishing.

331 A cell atlas of the adult Drosophila midgut.

330 Evidence of tool use in a seabird.

329 How flight feathers stick together to form a continuous morphing wing.

328 Learning is enhanced by tailoring instruction to individual genetic differences.

327 Vampire Bats that Cooperate in the Lab Maintain Their Social Networks in the Wild.

326 Global distribution of earthworm diversity.

325 The cumulative loss of nearly 3 billion birds since 1970 across North American biomes signals a continuing avifaunal crisis.

324 Global wildlife trade across the tree of life.

323 Daytime colour preference in Drosophila depends on the circadian clock and TRP channels.

322 During migratory stopover of white-crowned sparrows, consumption of seeds treated with neonicotinoids reduced fattening and delayed departure.

321 Behavioral and neural correlates of hide-and-seek in rats.

320 A Parental Volatile Pheromone Triggers Offspring Begging in a Burying Beetle.

319 Selection on VPS13A linked to migration in a songbird.

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