I do not know for sure if Pied-bill Grebes (Podilymbus podiceps) are migratory, but I had not seen any in a long time when I spotted a small flock of them on Tuesday in the waters off of Occoquan Bay National Wildlife Refuge. Pied-billed Grebes have a rather unusual and distinctive look—especially the bill— that makes them relatively easy to identify. Northern Virginia, where I live, is far enough south that it is a destination for some birds that will overwinter here, while many other species will pass through on their migration southward.
According to the Cornell Lab of Ornithology, “The Latin genus name for “grebe” means “feet at the buttocks”—an apt descriptor for these birds, whose feet are indeed located near their rear ends. This body plan, a common feature of many diving birds, helps grebes propel themselves through water. Lobed (not webbed) toes further assist with swimming. Pied-billed Grebes pay for their aquatic prowess on land, where they walk awkwardly.”
© Michael Q. Powell. All rights reserved.
