Field Frame Friday: Bike safety meets surf safety?

What are those dark purple lumps on the rocks below? The sea urchins, Colobocentrotus atratus, have earned several nicknames for their distinctive body shape, including “helmet urchin” and “shingle urchin.” Unlike other urchins covered in long, sharp spines, C. atratus have a smooth body and flattened spines. Their unique body plan helps them withstand pounding…

Ask A Scientist: Aggressive Hippos

Momo meerkat asks, “Why don’t hippopotamuses let other animals join them in rivers?“ Interesting question, Momo Meerkat! Hippopotamuses are actually pretty aggressive with each other. As a result, other animals, like kudu and impala (both types of African antelope) may avoid the waters when hippopotamuses are around to avoid getting caught in the middle of…

Field Frame Friday: Watch where you step!

White-crowned sparrows (Zonotrichia leucophrys) nest in small willows or pines, often right on the ground. The nests are really hard to find but are so important to my research! Most nests have 4 tiny speckled eggs. When we find them, we track them as the eggs hatch and the nestlings grow up. [Photo and caption…