October 15, 2020 – The Swamp sparrow is an elegant, long-legged, medium-sized sparrow that is well adapted and right at home in the thick cover of marshes, swamps, and bogs of the north across eastern and central North America, stretching up into Canada’s Northwest Territories during the nesting season. The Swamp sparrow is more often detected by its song rather than actually being seen in its’ dense summer habitat of sedges, cattails, and shrubs. The variations of songs and calls of the Swamp sparrow have been studied, admired, and described as a slow, sweet, trill that will evoke the vision of a northern wetland to the observer just as the call of the Common loon sends ones’ thoughts to a clear secluded lake in the north woods. Ornithologists have even discovered regional dialects for Swamp sparrows located in different parts of the country. Through the study of the Swamp sparrow’s songs and calls researchers have gained an understanding on how these birds learn and continue to use songs that vary across different geographical regions, and how the sparrows are influenced as young by the popular songs used by the adults of those regions. It seems the most popular songs are the ones that are learned and repeated by the new generation of sparrows and any new variation that a young bird may come up with in its’ song learning practice that is not useful will soon fade away over time. The study also shows those popular songs have persisted in those regions for generations, possibly hundreds of years. The term used to explain how these song types are learned and stay popular to a region is known as “conformist bias”. The sparrows have a song repertoire, depending on the region, of popular tunes that have stood the test of time over many generations, influenced by the adults and put in to practice each year by a new generation of Swamp sparrows. Those tunes that work ring-out across the varied wetlands of North America.
October 1, 2020 – The Magnolia warbler is a small songbird that nests across the provinces of Canada, from British Colombia, to Nova Scotia, and the Upper Great Lakes, to the northeastern US. The warblers have striking colors even after the breeding season, when many birds lose their bold colorful plumage and become rather dull. During the fall migration these little warblers bring some bright yellows to the early autumn Midwestern woods. These long-distance Neotropical migrants are on their way south stopping for a few days in a small woods in Iroquois County. Suddenly appearing out of the thicket, the Magnolia warblers forage for insects through the leafy bushes at the sunny edge of the small wooded area no larger then an acre. These small patches of land that have for some reason avoided the plow are life savers for migrating birds, insects, and bats. Whether seasonal migrants, or wildlife that is here year around, these small untouched habitats that are few and far between, and barely surviving among the cultivated lands of Illinois are pieces of land that are of the utmost importance to many species. The loss of habitat at wintering and nesting sites as well as the food and resting areas along the migratory routes can have a devastating impact on many species of birds. The Magnolia warblers travel from Panama and Mexico to the far northern US and up into Canada and back again in the fall. These migratory trips can be as much as 4000 miles one way. It is a hard trip for the little fliers and those exhausted birds that can’t find places to rest and feed don’t make it. Awareness and conservation are key to help prevent many species of birds from being listed as rare, or worse, cannot be found. Shade coffee farms that are replacing the sun coffee farms have provided good habitat for the warblers, Hummingbirds, and other species, and supporting shade grown coffee goes a long way in helping provide a winter habitat for these migrants. River valleys, lakes, and the islands of uncut forests across Illinois are the refueling stations for these tired night travelers that still have many miles to go during another exhausting and challenging migration.
August 6, 2020 – An always expanding collection of finely mimicked songs is the beautiful repertoire of the Northern Mockingbird. Both male and female mockingbirds have the amazing ability to vocalize the songs of many other birds and even some sounds found in nature that are not birds at all, like frogs for example. August 6, 2020 – Singing out with some impressive melodies, an effort meant to attract a mate during the spring and summer, the male mockingbird is a highly motivated and persistent melodious suitor. One cannot ever assume that they are hearing the strong rich songs of the Northern Cardinal, or the mysterious unearthly whine of a Gray Catbird, coming from the forest thicket when there is a talented mockingbird with it’s amazing ability in the area. Over the years the celebrated Northern Mockingbird has been, and continues to be, the inspiration for authors, poets, and lyricists as the subject of joy, sadness, or quiet reflection. The unmated bachelor mockingbird is relentless and will sing his desperate love songs late into the night, sometimes detouring their human neighbor from their coveted path to dreamland, causing some frustration for the tired. The disturbed half awake human, perched nearby, find themselves silently rooting for the bachelor’s quick success in finding a mate, an endeavor that would surely put an end to the late night concerts. The Northern Mockingbird is about the size of a Robin, it has a long tail, and is gray over white in color. The mockingbird has some distinct white wing patches and white in the tail that become obvious when the bird is in flight and their feathers are spread wide. The eyes of the mockingbird are light brownish-orange in color and appear quite striking in good light. Our area of Northern Illinois is in the northern edge of the mockingbirds year-round range but they are more common during the winter in the central and southern part of the state.
May 28, 2020 – Standing out among the greens and yellows of a spring prairie that surrounds a shallow, seasonal, wetland of only a few acres, the bright white color of the four migrating Cattle Egrets in Iroquois County recently made for an easy count. While two of the birds were occupied preening, the other two were busy hunting through the prairie flowers and grasses for prey. Earthworms, frogs, and insects were on the menu this day. The egrets eventually came into range as they worked their way around the waters edge hunting the surrounding grasses. I could now observe through my camera their successful hunting techniques getting a close-up look at their focused behavior as they cautiously stepped through the taller grasses carefully looking for prey. A large nightcrawler worm is consumed quickly, but a big frog takes some work to dispatch and eat, a process that quickly becomes a challenge to keep the catch from being stolen by another egret. Before long, keeping the frog turns into an aerial pursuit across the water to the other side of the wetland where the successful hunter eventually wins the prize as the thief soon gives up.
Cattle Egrets are not native to the Americas, they are believed to have flown across the Atlantic via the northeast trade winds and arrived in South America in the late 1800’s from Africa. The Cattle Egrets expanded north into North America and were nesting here by the 1950’s. Most people would recognize images of these birds in the country from which they migrated from, Africa. One can easily visualize these birds perched on a large Cape buffalo, Zebras, or walking around close to the trunks of grazing Elephants. Here in America the egrets are often seen in cow pastures perched on domestic livestock and walking near the head of foraging cattle waiting for insects or other prey to be flushed by the large grazer. The little birds have no problem plucking insects and parasites off the faces of the cooperative cattle. These recent visitors to Iroquois County were in their beautiful breeding plumage. Three Cattle Egrets in breeding plumage were most recently reported by Jed Hertz in Kankakee County feeding in a similar habit as those found in Iroquois County.
May 21, 2020 – As we near the end of May we are about two thirds of the way through another spring season as newly arriving migratory birds continue to be seen in our area of Northeastern Illinois as summer draws near. The Great Crested Flycatcher is a recent arrival and is a large colorful bird that has a bright yellow belly and an impressive crest on top of its’ head, that feathery crest promptly raised straight up when the bird is excited. These beautiful flycatchers can be found hunting along wooded areas and near grasslands and along the rural roadways of Illinois. Sightings of this common bird are now being recorded in Northern Illinois and one was just recently found in Iroquois County hunting the edge of a small woods perched near some tall grass. The Crested Flycatcher stands out among the smaller and more drab flycatchers like the Eastern Phoebe and Eastern Wood-Pewee that have the same hunting behavior and can be found hunting the same territory. The Great-Crested Flycatcher winters from southern Mexico south into South America. Another recent arrival that looks quite dignified covered in black and charcoal-gray feathers, white throat, chest and belly with white-tipped tail feathers is the Eastern Kingbird. Like other flycatchers the Kingbird prefers perches near open grassy areas with a good view of flying insects where the fast flying, quick turning, Kingbird will quickly catch the prey on the wing. The Kingbird spends the winter in the western Amazon basin of South America and nests in almost all of the United States, except for the deep southwest. It also nests in most of southern Canada from the Atlantic to the Pacific. Exciting flashy red male tanagers, both Summer Tanagers and Scarlet Tanagers, have just recently arrived. The female Scarlet Tanagers do not have those bright red feathers but are covered in olive-yellow plumage with dark wings. The Summer Tanager females are mostly yellow and do not have dark wings. The Summer Tanagers are a long-distance migrant that winter in southern Mexico, Central America, and northwestern South America. The beautifully striking Scarlet Tanager spends the winter months in the foothills of the Andes in South America. This year seems to be a banner year for Scarlet Tanager sightings as there are a large number of people reporting and photographing for the first time Scarlet Tanagers at their backyard feeders Ruby-throated hummingbirds are establishing territories near good food sources and a variety of colorful warblers continue to excite birdwatchers as many will be nesting here and others will continue north.
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.
September 12, 2019 – The House finch is a native of the west with a range that stretches from Oregon south into Mexico and east to the western edge of the Great plains. The House finch is very much at home in desert habitats of the southwest. Today though, after being illegally introduced in the 1940’s in the state of New York, their range has expanded to include most of the the Eastern half of the United states with kind of a gap between the eastern and western populations across the Great plains that runs from Canada south to eastern Texas. The expansion into the eastern United States was a result of escaped finches from the illegal pet trade. The captured House finches from the western United States were sent to pet stores in the east. The House finches were marketed as the California Linnet and the Hollywood finch, but soon failed as caged pets. The finches did succeed as escaped wild birds breeding and expanding their range. The proliferation of House finches along with changes to habitats by humans is believed to be key in the decline of the Cassin’s finch in the west and the Purple finch in the east, two species very similar in appearance to the House finch. The House finch is mainly a seed and fruit eater, when fruit is in season. Flocks can be spotted in Eastern red cedar trees feeding on the fruit in late summer. House finches are social and are common in numbers at backyard feeders, here in Illinois, competing for food with other finches like the Purple finch and the Gold finch.
July 18, 2019 – The adult Barn swallows are sleek and swift with vibrant colors and long forked tails, they are both elegant and beautiful in flight or perched. The American Barn swallows are long-distance migrants and spend the nesting season in most all of the United State and north into southeastern and northwestern Canada and into southern Alaska. The swallows winter in Central and South America. Barn swallows are seen here in Illinois during their nesting season. Most often they are noticed in large numbers around open farm buildings where they build their nests in the rafters and eaves. They also use large and small bridges where they build their nests in the underneath structure of the bridge supports. The swallows construct their nests out of wet mud and grasses forming them into a half cup shape in the relative safety of the man-made structures or natural shelters like cliff overhangs.
These medium size birds fly up and down the creeks and ditches and across open areas zigzagging in confusing maneuvers as they hunt for insects. The young are brought food, usually large insects, while still in the nest or as fledglings perched together near the nest site. Their little bright yellow beaks all pop open at the same time like little beacons as their heads move in unison following the adult birds as they fly by. The adults seem to know who’s turn it is eat next when they return with a plump insect. Folklore and religious tales relating to the Barn swallow have endured throughout the ages. It is said the Barn swallows bring good luck if it nests on your farm but removing the swallows nest would bring bad karma to the farm. It is also said that the Barn swallow brings us the good news, with their chatter, that summer is on its’ way.
April 22, 2019 – Gnatcatchers, warblers, kinglets and wrens were feeding on the abundance of tiny swarming gnats this past week at the edge of a small wooded area south of Kankakee. There were five Blue-gray gnatcatchers quickly hopping from branch to branch feasting on the large number of gnats that were covering the tree branches. The gnatcatchers are migrants that winter from the Southeastern coast of the United States, Florida, along the Gulf coast west and down into Mexico and Central America. Northern Illinois is near the northern edge of their nesting range that stretches up into Wisconsin and may be expanding as the climate warms.
A pair of Ruby-crowned kinglets were visiting the same tree taking advantage of the abundance of protein. The little kinglets are about halfway between their winter range and their summer nesting territory. A house wren was also at the banquet and is now in its’ summer range while the smaller Winter wren that was busy searching for insects lower on a tree stump still has a little ways to go before it reaches its’ summer nesting territory. Field sparrows were there looking through the nooks and crannies of the decaying wood stumps for insects and worms.
A Northern parula warbler which nest in most of the eastern half of United States brought the most color to the brunch. The small parula warbler is a long-distance neotropical migrant that winters along the Gulf of Mexico from Mexico down into Central America and east throughout the Caribbean. The tiny warbler has yellow from under its’ chin down across its’ breast. The lower half of the birds bill is a bright yellow that matches those bright yellow feathers on its’ chin and even in the muted light looked brilliant against the bluish feathers on the upper parts of the little warbler.
April 11, 2019 – An unrelenting and attention grabbing chase scene was on, as two small Song sparrows pursued each other in an amazing high speed aerial flight that took them zipping between small openings in the woods, over and under bushes, and around trees, a display that lasted well over ten minutes. Soon though, the two birds were on the ground in a small gassy area and appeared to be locked in a serious battle. The pair of male Song sparrows were having a territorial dispute that boiled over into a crescendo of a blurred feathery terror that played out in an opening at the edge of small woods this past week in Iroquois county.
It is not uncommon to see two or more birds having some sort of disagreement over a territory, mate, or reasons not fully understood, but most of the time it only lasts a few seconds with minimal to no physical contact at all. Less often though, one may witness an epic knock-down-drag-out fight at a level that raises a concern of a not so cheerful outcome. The fight which lasted a good four minutes looked at times to be quite violent. The little birds seemed to be going for each others head and face area with those long sharp claws normally used to scratch the earth for seeds and insects.
With the exception of an occasional pause during the fight when the birds had each other restrained, the struggle was much too quick for the human eye to comprehend. The details of the struggle could only be understood in the photos after the fact. Just as quickly as the ground battle started it was all over and they both disappeared from the battlefield. A few minutes later a single male Song sparrow was perched and singing on a small branch nearby as order seemed to have been restored and the intruder had fled the area.
A study that tested the hypothesis of song-matching, “Song Type Matching Is an Honest Early Threat Signal in a Hierarchical Animal Communication System”, was published online in Proceedings of the Royal Society B in 2013. Song matching is the matching of the song of the intruder, sung by the territorial male Song sparrow as an early warning signal to the intruder to stay away. The researchers found that song matching begins at low-level and then switches to higher-level that almost always predicts an attack on the intruder. The bird may also try other signals to send warnings to the intruder such as wing waving combined with song-matching as part of the early warning signals. .Akcay, C., M. E. Tom, S. E. Campbell, and M. D. Beecher. “Song Type Matching Is an Honest Early Threat Signal in a Hierarchical Animal Communication System.” Proceedings of the Royal Society B: Biological Sciences 280, no. 1756 (2013): 20122517. doi:10.1098/rspb.2012.2517.