256 A global study of all bird species in mountainous areas shows that richness decreases predictably with elevation, whereas diversification rates increase.
https://www.nature.com/articles/nature25794
255 Variation in winter coat color may protect species with winter camouflage—such as hares, weasels, and foxes—when the climate warms.
http://science.sciencemag.org/content/359/6379/1033
254 Controlled iris radiance in a diurnal fish looking at prey.
http://rsos.royalsocietypublishing.org/content/5/2/170838
253 Wild Australian magpies (Cracticus tibicen dorsalis) living in large groups show increased cognitive performance, which is associated with increased reproductive success.
https://www.nature.com/articles/nature25503
252 Alarm calls evoke a visual search image of a predator in birds.
http://www.pnas.org/content/115/7/1541
251 Morphology, muscle capacity, skill, and maneuvering ability in hummingbirds.
http://science.sciencemag.org/content/359/6376/653
250 Polar bears’ high-energy lifestyle makes then reliant on sea ice–associated prey.
http://science.sciencemag.org/content/359/6375/568
249 Structural absorption by barbule microstructures of super black bird of paradise feathers.
https://www.nature.com/articles/s41467-017-02088-w
248 Genomic Analysis of Demographic History and Ecological Niche Modeling in the Endangered Sumatran Rhinoceros Dicerorhinus sumatrensis.
http://www.cell.com/current-biology/fulltext/S0960-9822(17)31466-5
247 The image-forming mirror in the eye of the scallop.
http://science.sciencemag.org/content/358/6367/1172
246 Natural selection shaped the rise and fall of passenger pigeon genomic diversity.
http://science.sciencemag.org/content/358/6365/951
245 Disorder in convergent floral nanostructures enhances signalling to bees.
https://www.nature.com/nature/journal/v550/n7677/full/nature24285.html
244 Profound reversible seasonal changes of individual skull size in a mammal.
http://www.cell.com/current-biology/fulltext/S0960-9822(17)31093-X
243 Shaping highly regular glass architectures: A lesson from nature.
http://advances.sciencemag.org/content/3/10/eaao2047
242 Single rat muscle Na+ channel mutation confers batrachotoxin autoresistance found in poison-dart frog Phyllobates terribilis.
http://www.pnas.org/content/114/39/10491
241 Asymmetry hidden in birds’ tracks reveals wind, heading, and orientation ability over the ocean.
http://advances.sciencemag.org/content/3/9/e1700097
240 Poison frogs have evolved mutations in nicotinic acetylcholine receptor genes that confer toxin resistance.
http://science.sciencemag.org/content/357/6357/1261
239 The Jellyfish Cassiopea Exhibits a Sleep-like State.
http://www.cell.com/current-biology/fulltext/S0960-9822(17)31023-0
238 Lizards on newly created islands independently and rapidly adapt in morphology and diet.
http://www.pnas.org/content/114/33/8812.abstract
237 Eye patches: Protein assembly of index-gradient squid lenses.
http://science.sciencemag.org/content/357/6351/564
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