Blue Whale Song Mystery Baffles Scientists Wired

The steady decline in pitch of the sounds made by male Blue Whales has presented a quandary for scientists who study the largest animal on Earth. What can account for this steady decline? In other animal science quirks, researchers say there is evidence the prevalence of birdfeeders in the United Kingdom is affecting the speciation of a bird species known as the "blackcap warbler," possibly leading to the creation of a new species, as reported in Feeding Birds Could Create New Species.