246 Natural selection shaped the rise and fall of passenger pigeon genomic diversity.

245 Disorder in convergent floral nanostructures enhances signalling to bees.

244 Profound reversible seasonal changes of individual skull size in a mammal.

243 Shaping highly regular glass architectures: A lesson from nature.

242 Single rat muscle Na+ channel mutation confers batrachotoxin autoresistance found in poison-dart frog Phyllobates terribilis.

241 Asymmetry hidden in birds’ tracks reveals wind, heading, and orientation ability over the ocean.

240 Poison frogs have evolved mutations in nicotinic acetylcholine receptor genes that confer toxin resistance.

239 The Jellyfish Cassiopea Exhibits a Sleep-like State.

238 Lizards on newly created islands independently and rapidly adapt in morphology and diet.

237 Eye patches: Protein assembly of index-gradient squid lenses.

236 Winter storms drive rapid phenotypic, regulatory, and genomic shifts in the green anole lizard.

235 A novel mechanism for mechanosensory-based rheotaxis in larval zebrafish.

234 Ravens parallel great apes in flexible planning for tool-use and bartering.

233 Ravens remember the nature of a single reciprocal interaction sequence over 2 days and even after a month.

232 Sea spider pumps blood with its guts.

231 Family-transmitted stress in a wild bird.

230 Avian egg shape: Form, function, and evolution.

229 Drivers of salamander extirpation mediated by Batrachochytrium salamandrivorans.

228 Seed dispersal kernel of the largest surviving megaherbivore—the African savanna elephant.

227 Overseas seed dispersal by migratory birds.

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