September 5, 2019 – Throughout the summer months, in the skies over northeastern Illinois, all one has to do is look up to see those large, soaring, dark colored birds gently gliding in the summer thermals. The wings of the Turkey vultures are slightly, but noticeably, pointing up. The unmistakable dihedral angle or “v” shape of their wings while in flight are much different from other large birds like eagles and hawks. Those birds extend their wings straight out and flat from their body when soaring, and appear more like a sailplane. Even at a distance a Turkey vulture can be quickly ID’d by its’ shape and flight patterns. It is not uncommon to witness large numbers of Turkey vultures perched in an old snag preening and drying their wings in the morning sun. It seems that if one bird spreads its’ wings to warm up and dry out, the other perched vultures quickly follow suit. Soon that old tree full of vultures with wings spread wide begins to take on the appearance of the partially furrowed sails hanging from the foremast of an 18 century brigantine. The birds, with their wings stretched out, slowly and carefully begin to turn and reposition on those sometimes shaky branches as they continue their warming in the early sun drying the nighttime dew from their damp feathers. When the time is right and the their feathers are dry and ready for flight the birds begin to lift off from their roost. They leave, a few at a time, flapping their large wings and climbing upward into a column of the warm rising air to begin their daily search for carrion. Throughout the day the vultures are found in fields and along the rural roads and highways where their keen sense of smell and great vision has lead them to their primary food source, road kill. Most of the Turkey vultures will start moving south late in the year and spend the winter from far southern Illinois on south. In recent years though, with milder winters, there are larger numbers remaining throughout the winter months in central Illinois. The Turkey vultures are some of the first to arrive in numbers here in northern Illinois in late winter for another nesting season.
April 18, 2019 – As springtime advances and the migrants move north, Turkey vultures, those masters of the air currents, are once again gliding across the skies of Northern Illinois in large circling flocks that are sometimes referred to as a kettle. Even though a few of these large dark colored vultures are spotted in northern Illinois during the winter months, most migrate south in the fall after the nesting season. They spend the winter from Southern Illinois and across the southern United States, south through Cuba, Mexico, Central and South America and as far south as ‘the end of the world’ Tierra del Fuego in southern Chile.
North America has three of the six subspecies of Turkey vultures. Cathartes aura septentrionalis is found in the eastern United States.(Palmer, 1988) With a wingspan of around six feet these large slow flying birds are hard to miss as they fly off of the carcass of the unfortunate roadkill as a vehicle approaches. Those close encounters certainly gives the observer an appreciation for the impressive size of the Turkey vulture. They usually don’t go far when flushed from the carrion and soon return to their feeding when the threat is gone. They are often seen still on their roosts in dead trees, utility poles or buildings early in the morning. With their wings spread wide like a parabolic antenna while facing the warm morning sun they are warming their bodies and drying their feathers from a rain shower or the dampness of the night.
Nesting Turkey vultures will use the abandoned nest of other large avian species in secluded areas far from human traffic. They will also use old sheds, barns, and houses that are remote, grown-up, neglected and open to the elements. The Turkey vulture may choose to lay their clutch of 1 to 3 eggs in a nest on the ground that they scrap out in the leaf litter in a dense thicket or near a fallen tree or even in a hollow log. The vultures will have only one brood over a 60-84 day nesting period and may return to the same nest year-after-year according to The Cornell Lab of Ornithology, All About Birds. Palmer, R. 1988. Handbook of North American Birds, Volume 4. New Haven and London: Yale University Press.
July 16, 2018 – After a brief but heavy morning rain a small group of soaked Turkey vultures rotate on their perches to face the direction of the emerging sun. Their nearly six foot wingspan spread and slightly cupped helps dry those wet feathers and regulate body temperatures of the vultures before they can take to the thermals and glide above the summer landscape in search of carrion.