Archive | January 2019

CLIMATE CHANGE APPEARS TO BE AFFECTING HOUSE FINCH NESTING

 

        Have you ever wondered if climate change is affecting the birds that visit our backyards?  A recently completed study of house finch nests has shed some light on how the warming of the globe is affecting this common backyard resident.

       Biologists found house finches appear to be nesting earlier in California in response to climate change. 

       This conclusion is based on an analysis of museum records of house finch nests collected over more than 100 years (1895 to 2007).  When these data were compared to the spring temperatures recorded in the areas where the nests were collected, it was found the finches were nesting four and a half days earlier for every degree Celsius the spring temperature has increased in the locales were the house finch nests were collected.    If you would like to know if house finches in the Peach State are altering their nesting dates in a similar manner, you should consider becoming a citizen scientist and conduct your own study based on house finch nesting records collected in your backyard, neighborhood, or county.

MOCKINGBIRD EXPANDS ITS DIET

        I cannot remember a time when my wife and I have not hosted mockingbirds in our yard.  During this time, we have learned mockingbirds dine on a wide variety of foods.  In fact, after watching these fascinating birds for more than four decades, we thought we had a pretty good understanding of what mockingbirds will and will not eat. 

        Each spring we compete with these vocal birds for blueberries.  Later in the year, we always enjoy watching them defend our berry-laden dogwood trees, refusing to allow other birds to feed on the trees’ shiny red berries.  We have observed them feast on pokeberries as well as the berries of the American beautyberry.  We have also seen them devour all kinds of insects, earthworms and even a small lizard or two.  Much to our chagrin, they seem to relish plucking black swallowtail caterpillars from bronze fennel plants.

        In winter, we have watched them dining on slices of apples and oranges.  They also seem to eat more than their share of suet laced with peanuts and peanut butter.  While we frequently see mockingbird land on seed feeders, never had we seen one eat a single seed at these feeding stations.  That all changed earlier this week when I watched a mockingbird feed on white millet for several minutes.  This particular bird landed on a platform feeder filled with white millet seed.  Upon landing, it began feeding by thrusting its bill forward scooping up several seeds at a time.  Time after time, it repeated the process until it suddenly flew away.

        If it is indeed true that mockingbirds rarely eat white millet seed at backyard feeders, I cannot help but wonder why this bird chose to partake in the shiny, round seeds.  It will be interesting to see if the bird returns to dine on millet again.  If not, perhaps this adventuresome mocker quickly learned why generations of its kin chose to ignore this common backyard bird food.

TRY FEEDING PECANS – MANY BIRDS LOVE ‘EM

          In spite of the fact that there are dozens of wild bird foods to choose from, the vast majority Georgians feed their feathered neighbors mixed seed, or black oil sunflower seeds.  If you want to expand your feeder menu, consider pecans.

          Since pecan meats are loaded with calories, and laden with fat, they are a great alternative food for birds, especially during the winter.  In addition, they are popular with many feeder birds.  In one study conducted in the Peach State, the nutmeats from a wide variety of nuts were tested to determine which were preferred by birds.  The study revealed pecan meats were the second most preferred nutmeats tested.  Surprisingly, black walnut meats topped the list.

          Pecans can be fed to birds in a number of ways.       

          Suet containing bits and pieces of suet can be purchased from your favorite bird supply store. 

          While you can place whole pecans in your feeder, it has been my experience that, if you do so, crows and large birds as well as squirrels will be the only diners that will avail themselves of the nuts. 

          In an effort to let birds know the nuts are a source of food, some folks crack a large hole in the shell of each pecan.  This allows smaller birds access to the meats.    However, most folks either simply crush pecan meats into small pieces or buy nutmeats that have already been crushed.  If cracked pecan meats are not available at your bird supply shore, they can be purchased at any grocery store.  Better yet, if you live near a pecan processing plant, check and see if you can buy either rejected nuts or bit and pieces of nuts there.

          As you probably know, pecan meats will get rancid.  This problem is particularly acute in warm weather.  With this in mind, it is a good idea to store your supply of pecan meats in a freezer.

          If you offer your feeder visitors pecan meats the birds most likely to dine of them are Carolina chickadees, nuthatches, blue jays, and woodpeckers.