Black Terns

Black Tern

Black Tern

June 10, 2018 – A small number of migrating Black terns have been reported recently at the Black Oak Bayou of the LaSalle Fish & Wildlife Area adjacent to the Kankakee river in Newton County Indiana. The Black terns could be seen flying low over the water as they hunt. With their silver wings spread wide they gracefully swooped from side to side, at times stopping to hover. The small terns would stretch their neck as they would look down towards the water to focus on the movement of a potential prey while their aerodynamic skills kept them suspended in one place. They would take insects off the water or out of the air or from a protruding limb of a submerged snag with remarkable precision.

Black Tern

Black Tern

They would glide with the sun to their back slowly working their way from east to west over the glimmering sparkles of the shallow waters of the bayou. Suddenly with a decision only they understood they would swiftly turn and fly quickly back toward the east and start over with their slow and methodical hunting technique which would repeat many times before they would find a small tree stump barely showing just above the water line to perch and rest a short time before the next hunt. The drainage of wetlands along with dangerous agricultural chemical runoff have had significant negative impacts on the nesting areas of the Black tern. Loss of migratory wetlands from drainage and pollution has added to a steep decline of the North American population of Black tern along with many other species. Overfishing of the Black terns coastal tropical winter range is also believed to have contributed to the somewhat sharp decline of this species.

Black Terns Hunting

Black Terns Hunting

Bonaparte’s gulls

Adult Bonaparte's gull in full breeding plumage

Adult Bonaparte’s gull in full breeding plumage

April 19, 2018 – Good size flocks of Bonaparte’s gulls have been reported in Kankakee county and throughout Northern Illinois in recent weeks as they are working their way north to the boreal forests of western and central Canada and the southern half of Alaska where they will nest in the conifers. The small gulls prefer trees separated from the dense growth that are at the edges of marshes and bogs. A flock of 50 of these small and elegant tern like gulls was spotted in a flooded area of an agricultural field busily feeding on insects and worms, certainly to bulk up for their long journey north. The winter plumage of these gulls is mostly white, with a light gray on the tops of their wings and black wingtips, plus a dark spot on the sides of the head behind the eye. During the nesting season the adult birds’ head transitions to a slaty black as they get that wonderful dark hood that stands out in a beautiful contrast to their white body. This flock was made up of adult birds in full breeding plumage with some that were at different stages of transition, plus a number first year birds.

Bonaparte's gull not in breeding plumage

Bonaparte’s gull not in breeding plumage

American White pelicans

American White pelicans J.C. Murphy lake at Willow Slough FWA

American White pelicans J.C. Murphy lake at Willow Slough FWA

April 14, 2018 – Numbers of American White pelicans have been reported in our area for the past month. East of Momence near the Illinois/Indiana state line in Newton county Indiana, small and large flocks have been observed at the Black Oak Bayou of the LaSalle Fish & Wildlife Area. The pelicans are using the local small lakes, cooling lakes, and the backwaters of the Kankakee river as staging areas where they can rest and feed while waiting for that moment when that strong hormonal drive pushes them to head further north for the nesting season. Fifty of the large white birds have been counted at Black Oak with similar counts for J.C. Murphy lake at Willow Slough FWA. A flock of these great birds have been using a small rocky island in the Kankakee River State Park with a number of 25 birds reported on April 7th. Even larger numbers exceeding 100 have been reported near Braidwood and north to the Des Plains river.

Pelicans swimming at Black Oak Bayou of the LaSalle Fish & Wildlife Area

Pelicans swimming at Black Oak Bayou of the LaSalle Fish & Wildlife Area

Traveling Tree Swallows

Tired Tree Swallows

Tired Tree Swallows

April 5, 2018 – Most had their heads cocked with their faces tucked deep into their feathers as they perched sleeping side-by-side on this cold April morning in a springtime where winter was refusing to yield. Their long extended wing feathers, their primaries, appeared like little brown scabbards hanging from the belts of tiny soldiers that were dressed in their finest blue jackets. The weather was right for the snow that was predicted for later in the day and they seemed reluctant to leave their bivouac even well after sunup. There were more then 150 of these tired travelers roosting in a small tree at the edge of some flooded timber in the backwaters of the Kankakee river. Tree Swallows are known as short-distance migrators even though some travel as far as Alaska for the breeding season and nest in most of Canada and much of the United States. The Swallows winter along the South Eastern coast of the United States, the Gulf of Mexico and south into Central America. Some Tree Swallows have arrived even earlier and have been in our area for at least a month and they have already paired up and staked out their territory. This flock appears to be a recent arrival and may have traveled many miles in the last few days. They may still have some distance to go before they reach their destination, hopefully a more temperate weather pattern will soon take hold for this sleepy flock of traveling Tree Swallows.

Tree Swallows sleeping

Tree Swallows sleeping

Horned Grebes

Horned Grebe

Horned Grebe in winter plumage

March 28, 2018 – A pair of Horned Grebes glide silently across the placid waters of the Black Oak Bayou. One is still in its’ mostly achromatic winter plumage, while the other is transitioning towards the more impressive breeding colors of gold, black and chestnut. These small divers with their intriguing red eyes are on their northerly migration. The birds have been spending some time at a good food source of aquatic invertebrates and small fish at the Black Oak Bayou in the LaSalle Fish & Wildlife Area in Newton county Indiana. Soon the grebes will follow their instincts and continue the journey north into Canada towards the boreal lakes and marshes where their impressive courtship display will once again signify a bonding and the coming of a new generation of those red eyed divers.

Horned Grebe

Horned Grebe starting to show breeding colors