4+ day, 20+ hour ago   (826+ words) A multidecade study of wild chickadees shows how smart they need to be to survive Researchers have tagged this wild mountain chickadee as part of a long-term cognition study of the species in the Sierra Nevada range. A mountain chickadee…...

2+ week, 4+ day ago   (380+ words) Capuchin monkeys may provide insights into the dietary evolution of our early ancestors Bearded capuchin monkeys (Sapajus libidinosus) (shown) in Brazil are more in the mood for meat as access to fruit decreases. When the fruit runs low, some monkeys…...

3+ week, 3+ day ago   (273+ words) Cataloging nature’s pokey bits reveals a trade-off between durability and effective piercing Cactus spines, shark teeth and porcupine quills are among the many and varied puncture tools that living things sport. Anderson and colleagues sampled a wide variety of spikes…...

3+ week, 5+ day ago   (21+ words) Long-clawed shrews’ snouts temporarily grow larger in the winter. This skull reshaping may be an extreme survival strategy in cold conditions....