Sunday Sketch: Reindeer Games

Did you know? Reindeer are the only deer species where both males and females grow antlers. Though the males shed their antlers in late autumn after mating season, the females retain theirs throughout the winter pregnancy to defend scarce food patches. It is likely then, that Rudolph was in fact a female rather than a…

Sunday Sketch: Flying Mammals

Did you know? Bats are the only mammals that can fly! Other “flying” mammals like sugar gliders, flying squirrels, and colugos cannot truly fly: they can only glide for short distances. Bats, however, are capable of powered flight for long durations. For more information on the evolution of bat flight: Zhang, G., Cowled, C., Shi,…