A world of warblers

Guest post by Alyssa Firkus

In my early twenties, I believed adventure was found in the tallest mountain, the deepest ocean, the largest cavern. I chased whales, orca, brown bears, bald eagles, and other charismatic megafauna. It took decades to realize I didn’t need to seek these animals or climb these mountains to find adventure. Some of the best adventure awaited me in my own backyard. This led me to join the Education Department at the Lake County Forest Preserves in northern Illinois in October 2018. What an adventure it’s been!

Anyone who’s attended a program taught by our staff or volunteers knows these educators are knowledgeable and passionate. This group ignited my latest adventure—birding—though I can’t point to a single component that sparked my newest hobby. It could have been my awe for the birders in this group, their love for birds and their impressive ability to bird by ear. It might have been my draw to a new challenge. The patience, attention to detail, and dedication it takes to be an effective birder. It may have been the rush of excitement, getting a glimpse of a rare species for a brief moment as it makes its annual migration. Perhaps all of these were feathery factors. Regardless, I’m hooked.

Birding is a rewarding activity that requires patience and knowledge. Photo © Tim Elliott.

On May 4, I participated in the Spring Bird Count at Ryerson Woods in Riverwoods, where I entered the complex, intimidating world of spring warblers. These birds are small, dynamic insect-eaters that look very similar to each other in the eyes of a novice birder. They pass through Lake County in April and May as they migrate from the southern U.S., Mexico, and Central and South America toward Canada and the northeastern U.S.

Warblers can be hard to spot; they’re small, they move a lot, and males and females of the same species can have different plumage. Prior to this effort, each time I opened my Peterson Field Guide I would skip the warbler section. Despite the challenge, warblers are the most thrilling birds to see. They bring a burst of color, a promise of spring. Their flashes of orange, yellow, and blue make any woodland seem more alive.

Thankfully, a coworker helped make this a less daunting experience by focusing me on three warblers to start: the palm warbler (Setophaga palmarum), the yellow-rumped warbler (Setophaga coronata), and the black-throated green warbler (Setophaga virens).

The palm warbler is easily spotted by its near-constant tail pumping. And you can look for the yellow-rumped warbler’s, well, yellow rump patch, as well as white patches in its tail.

The black-throated green warbler is often heard before it’s seen. I quickly learned to pick out one of its calls: zee, zee, zo zo zee. It can be identified by its white wing bars and straight, thick bill. They’re found in all different types of forest habitats, even swamps, where they feed on insects, mainly non-fuzzy caterpillars.

A black-throated green warbler sings on a branch. Stock photo © Lake County Forest Preserves.

Soon I was confident with these species and ready to identify more. My next goal was the black-and-white warbler (Mniotilta varia). Named for its black-and-white stripes, it was fairly simple to identify. This species often hangs out on tree trunks looking for insects in the bark.

The magnolia warbler (Setophaga magnolia) tends to hang low in shrubs or short trees. Adult male magnolia warblers boast a distinguishing black mask. They migrate at night, traveling long distances to their summer breeding ground in Canada. In Lake County, they’re often found in thick vegetation, hopping branch to branch and collecting insects from the undersides of leaves.

Look for the male magnolia warbler's distinctive black streak across its face. Photo © Randall Wade.

There are plenty more warblers, plenty more birds, to learn about and identify and appreciate. As I continue to grow my annual list and become more familiar with birding areas in Lake County, I encourage you to do the same. Before you travel far and wide, consider engaging with the nature around you. Look no further than your backyard for your next adventure. A world of warblers is out there.

An educator searches for birds at Independence Grove. Photo © Lake County Forest Preserves.

Join us as we close out the spring birding season with our final Birdwatching Hot Spots programs on Saturday, June 1 and Saturday, June 15, 8–10 am at Spring Bluff in Winthrop Harbor. Look for waterfowl and other migratory species. Spotting scopes and binoculars will be available. FREE. No registration required. All ages welcome.

Poison ivy primer

Post by Jen Berlinghof

With Halloween fast approaching, much attention is given to animals that are considered “scary.” Foreboding ravens, ominous bats, super-sized spiders and snakes are everywhere. Thankfully, many people know the benefits of these critters. However, it seems there is one thing found in nature, surprisingly flora not fauna, that remains misunderstood and maligned: poison ivy (Toxicodendron radicans). The chemical urushiol in the sap of poison ivy can cause an allergic reaction in many people that results in an itchy rash. However, wildlife is not sensitive to the plant in the same way. In fact, poison ivy is an important native plant in Illinois with a host of benefits for our natural areas—from food and shelter for birds, mammals, and insects to erosion control on shorelines.

IMG_4835

Continue reading