Biology

Articles:
343 Egyptian fruit bats appear to use a cognitive map.
https://science.sciencemag.org/content/369/6500/194

342 Cognitive map–based navigation in wild bats revealed by a new high-throughput tracking system.
https://science.sciencemag.org/content/369/6500/188

341 Experimental evidence of dispersal of invasive cyprinid eggs inside migratory waterfowl.
https://www.pnas.org/content/117/27/15397

340 Drosophila as a model for studying cystic fibrosis pathophysiology of the gastrointestinal system.
https://www.pnas.org/content/117/19/10357

339 An insight into natural koala drinking behaviour.
https://onlinelibrary.wiley.com/doi/abs/10.1111/eth.13032

338 Female toads engaging in adaptive hybridization prefer high-quality heterospecifics as mates.
https://science.sciencemag.org/content/367/6484/1377

337 Sons accelerate maternal aging in a wild mammal.
https://www.pnas.org/content/117/9/4850

336 Analysis of thousands of living and fossil marine animals suggests that resistance to extinction has led to high taxonomic richness.
https://science.sciencemag.org/content/367/6481/1035

335 Ultrasonic signals associated with different types of social behavior of mice.
https://www.nature.com/articles/s41593-020-0584-z

334 The unique genetic adaptation of the Himalayan wolf to high-altitudes and consequences for conservation.
https://www.sciencedirect.com/science/article/pii/S235198941830180X

333 Small within the largest: brain size and anatomy of the extinct Neoepiblema acreensis, a giant rodent from the Neotropics.
https://royalsocietypublishing.org/doi/10.1098/rsbl.2019.0914

332 Ocean sentinel albatrosses locate illegal vessels and provide the first estimate of the extent of nondeclared fishing.
https://www.pnas.org/content/117/6/3006

331 A cell atlas of the adult Drosophila midgut.
https://www.pnas.org/content/117/3/1514

330 Evidence of tool use in a seabird.
https://www.pnas.org/content/117/3/1277

329 How flight feathers stick together to form a continuous morphing wing.
https://science.sciencemag.org/content/367/6475/293

328 Learning is enhanced by tailoring instruction to individual genetic differences.
https://elifesciences.org/articles/47216

327 Vampire Bats that Cooperate in the Lab Maintain Their Social Networks in the Wild.
https://www.cell.com/current-biology/fulltext/S0960-9822(19)31364-8

326 Global distribution of earthworm diversity.
https://science.sciencemag.org/content/366/6464/480

325 The cumulative loss of nearly 3 billion birds since 1970 across North American biomes signals a continuing avifaunal crisis.
https://science.sciencemag.org/content/366/6461/120

324 Global wildlife trade across the tree of life.
https://science.sciencemag.org/content/366/6461/71

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