Southern New England Coastal Plains and Hills

Six Buff-breasted Sandpipers were on the ground along Reservoir Avenue at Jerome Park Reservoir in the Bronx on August 31, at the end of a stretch that also put American Golden-Plover, Baird's Sandpiper, White-rumped Sandpiper and Stilt Sandpiper at the same reservoir between the 21st and the 31st. All of them breed in the Arctic and all of them are headed south.The Buff-breasted Sandpiper (Calidris subruficollis) is the odd one in that company, because it is a shorebird that does not want the shore. It avoids wet ground. Instead of probing soft mud the way Lesser Yellowlegs work a lake edge, it hunts by eye on bare, dry, short ground: stand still, watch, then a quick run forward to snatch an insect off the surface. A mown, open reservoir perimeter is exactly the kind of surface that suits it.That preference holds at both ends of its year. It nests on high Arctic tundra and winters on the grasslands of the Argentine pampas, and it is a lek breeder, though a loose and flexible one by the standards of birds that lek, with males gathering to display rather than pairing off on defended territories.If one is on the ground in front of you, it reads warm and evenly buff all over, plainer and softer than the crisply patterned juvenile Baird's Sandpiper that may be standing a few feet away. It is a bird built for dry grass, passing through a city on its way from one end of the hemisphere to the other.

The Passaic Valley Sewerage Commission, one of the largest permitted wastewater dischargers into the NY-NJ Harbor Estuary, is currently listed by EPA in Significant Non-Compliance with its Clean Water Act permit. That designation is not triggered by an isolated exceedance; it is reserved for violations sustained or serious enough to warrant priority enforcement, meaning the problem has persisted across multiple reporting periods rather than showing up as a one-time slip.The finding sits oddly against what has been showing up in the same estuary system this month. A Comet Darner was seen along the water's edge on July 14, a dragonfly whose nymphs spend months submerged in the water column and are notoriously intolerant of poor water quality. Golden Northern Bumble Bees have also been reported along the Brooklyn waterfront through late July, though their presence reflects shoreline flowering habitat rather than anything about water chemistry offshore.None of this means the two facts cancel each other out. A shared estuary system, fed by the Passaic, Hackensack, and Hudson watersheds before reaching the East River and Brooklyn waterfront corridor, is large and hydrologically complex enough to carry a major permit holder in sustained non-compliance in one arm while still supporting water-quality-sensitive insects somewhere else along its edge. A compliance listing by itself says nothing about dissolved oxygen or contaminant levels at a specific downstream point like the Brooklyn shoreline; that would require dedicated water-quality sampling, not just a permit status.What happens next is the more interesting question. Whether this pattern draws attention from agencies like NYC DEP or from watershed groups already active in the harbor, several of which track exactly this kind of downstream link between permitted discharges and biological indicators, is worth following as the season continues.

Golden Northern Bumble Bees (Bombus fervidus) have appeared 19 times along the Brooklyn waterfront over the past six months — Navy Yard, DUMBO, the East River Esplanade — with sightings still arriving this week. iNaturalist flags this species as threatened, and it has declined sharply across the northeastern United States, making a sustained urban cluster worth noting.The likely driver is a patchwork of community gardens and park plantings now in peak bloom. Late-season nectar from swamp milkweed and coastal plain Joe-Pye weed gives colonies the fuel to raise new queens before autumn. Bumble bees are among the few insects capable of buzz pollination — vibrating their flight muscles to shake loose pollen other bees can't reach — making them disproportionately important for native plant reproduction. Small habitat patches in cities are doing more ecological work than their footprint suggests.

Comet Darner (Anax longipes) — North America's largest darner — turned up in the park on July 14, perched along the water's edge in the midday heat. These elegant, long-bodied insects are indicators of clean, healthy aquatic ecosystems; their nymphs, which spend months underwater, cannot tolerate pollution.What makes this sighting worth noting is the landscape context. All 23 waterbodies assessed within eight miles of here carry federal impairment designations — meaning they are officially deemed too contaminated for their intended uses. Yet this threatened species still holds on in the green corridors threading the watershed, a testament both to the resilience of good habitat and the precariousness of what remains. The parks that shelter this darner are refuges in an increasingly compromised system.

Coastal sweetpepperbush (Clethra alnifolia) opened its tiny white flower spikes this week along the harbor edge, and the native pollinators found them at once. Five bee species have been recorded on the blooms across the waterfront since July 8: bumblebees (Bombus impatiens and B. bimaculatus), digger bees (Melissodes bimaculatus), masked bees (Hylaeus spp.), and sweat bees (Lasioglossum spp.)—a diverse and healthy roster for a single plant patch.This shrub once lined tidal creek margins throughout lower Manhattan, but now only a thin ribbon of native stands survives. The fact that pollinators still found these flowers, scattered across Brooklyn Bridge Park, South Cove, and Governors Island, speaks to the ecological memory embedded in the landscape. The bees remember where this native food source should be—or their populations persist because enough remains to sustain them.

Estuarine fish are at their breeding peak right now, when eggs and larvae are most vulnerable — but they face stacked pressures that make survival harder each year. The Passaic Valley Sewerage Commission has exceeded its permitted limits for suspended solids two quarters running, pushing 40% above the ceiling just as low-oxygen stress begins to set in across the estuary. Organic loading (measured as oxygen demand) is up 72% as well.The Hudson-Raritan estuary was once the richest fishery on the Northeast coast — a place of such abundance that its decline marks the transformation of the entire region. Each violation at this moment, during breeding season in these shallow, tide-dependent nurseries, is a small measure of how far recovery has yet to go.

The osprey is the only hawk that hunts by plunging into open water. Most raptors that take fish, like the great blue heron working the channel edge right now, wade or wait at the surface. The osprey drops from height and goes under, sometimes fully submerged, gripping fish with feet that are built for it: two toes forward, two back, and a rough pad surface that holds wet, slick prey. It shakes the water off before it even clears the surface, then repositions the fish headfirst in its feet for the flight back. That repositioning isn't incidental. A fish held sideways creates drag. The osprey corrects for it almost immediately. Watch one carry a fish any distance and you'll see it.Early summer is the best time of year to watch this. The days are at their longest, which means more usable hunting hours, and the tidal shallows here warm quickly through June. That warming matters because of what it does to insects. Mayflies are emerging from the bottom sediments of these channels right now, in the hundreds and thousands. They have spent months underwater as nymphs, and they are coming up to molt, mate, and die within a day or two. That emergence draws fish to the surface in a way that almost nothing else does. Striped bass, white perch, and juvenile bluefish move into shallow water to feed on the insects, and they feed near the surface, where an osprey can reach them. The mayfly emergence is not something the osprey targets directly. It targets the fish that the mayflies concentrate. The insects are doing the work of aggregating the prey.This kind of stacking, where one emergence event creates feeding conditions for something further up the chain, is common in tidal systems. The double-crested cormorant uses it too, diving from the surface into the same channels where fish are feeding. But the osprey and the cormorant aren't really competing for the same fish. The cormorant works subsurface and takes what it can run down underwater. The osprey needs fish close enough to the surface to be visible from above and catchable in a short dive. They are using the same channel at different depths.The black-crowned night heron, which roosts nearby and feeds at the channel margins after dark, is working a different shift entirely. In early summer the nights are short, but the heron's low-light vision and patient stand-and-wait approach let it take fish that have moved into the shallows to feed on invertebrates after sunset. What looks like a single habitat, one stretch of tidal marsh, is actually being used in sequential layers through the day.The osprey is still circling. It has adjusted its position twice, drifting downwind and then correcting back. Its head stays level while its body moves with the air. When it folds and drops, it will happen fast, and it will happen without warning. If you are watching the water below it rather than the bird itself, you will miss the moment entirely. The surface is flat and bright, and somewhere just under it, a fish is feeding.

Common Eastern Firefly (Photinus pyralis) flashing has returned to the parks this month — a handful of sightings scattered across the moist soil margins where they breed. Their presence here is, in ecological terms, remarkable, because every waterbody within miles is federally impaired.All eight water bodies in this region — the Hudson, East River, Newtown Creek, Gowanus Canal, Upper New York Bay, Erie Basin, Kill Van Kull, and the lower Hudson estuary in New Jersey — remain on the EPA's Clean Water Act list of impaired waters. None meets the condition needed to support their designated aquatic uses. Yet fireflies, which require wet soil and organic detritus to develop, have not abandoned these margins entirely.This is not a sign of ecosystem health, but rather a glimpse of ecological resilience under siege. The fireflies persist in the thin, undamaged strips between concrete and poison — a kind of luminous stubbornness in a landscape that grows less habitable by the season.

The morning light filters through Central Park's canopy differently now, catching the pale undersides of tuliptree leaves as they shift in the early summer air. Above the paths and benches, sixty feet up in the crown of the city's tallest native hardwood, something remarkable is happening that most people never see.Tuliptrees are opening their flowers. Each bloom sits upright at the branch tips like a small green and orange chalice, petals thick and waxy, built to last just long enough. The flowers appear only on the upper reaches of mature trees, those old enough to have grown above the surrounding canopy. From below, you might catch a glimpse of fallen petals on the walkway, their orange bands still bright against the pavement, but the real action unfolds in the crown.The invasive honeybees know exactly where to find them. Western honey bees, introduced centuries ago and now woven into the city's rhythms, navigate the urban landscape with precision that rivals any native pollinator. They rise from hives tucked onto rooftops and fire escapes, following scent trails that lead them past glass and steel to these ancient flowering giants. Each tuliptree flower produces both nectar and pollen in abundance, but only for a few days. The timing is everything. The tree's reproductive strategy depends on this brief window when the flowers are receptive and the rewards are rich enough to draw pollinators up through the maze of branches.Watch the honeybees work the tuliptree flowers and you see an exchange that has persisted through the city's transformation. The bees crawl deep into each flower, their bodies dusted with pollen from the ring of stamens that surrounds the central pistil. They carry genetic material from tree to tree across blocks and boroughs, connecting isolated giants in a network of reproduction that spans the urban forest. The tuliptrees depend entirely on this service. Without pollinators, the distinctive cone-shaped fruits that give the tree its other name, yellow poplar, would never form. Each fruit is actually a cluster of winged seeds that will spiral away from the parent tree when autumn arrives, seeking open ground where a new giant might take root.The relationship runs deeper than simple transaction. Tuliptree flowers bloom in sequence, not all at once, extending the nectar flow across several weeks of early summer. This steady supply helps sustain honeybee colonies through the critical period when they are building toward their population peak. In return, the bees provide something the wind cannot: targeted pollen transfer between trees that may be separated by miles of concrete and asphalt. The city's tuliptrees form a scattered population, isolated specimens and small groves connected only by the flight paths of their pollinators.Listen for the low hum that drifts down from the flowering crowns on still mornings. It is the sound of dozens of honeybees working the same tree, their flight patterns creating a busy network of activity sixty feet above the sidewalk. The flowers they visit will become the seeds that carry tuliptree genes forward, each one a potential century-old giant for a future city. The morning air carries the faint sweetness of nectar and the deeper green smell of leaves growing thick in the longest days of the year.

In the parks near the Upper West Side, the flowering dogwood stands in full bloom against the green backdrop of newly leafed trees. White bracts spread wide like cupped hands, each cluster holding dozens of tiny yellow-green flowers at its center. The air carries the faint sweet scent of nectar, a signal that draws insects from across the canopy and understory.The brown-belted bumble bee arrives with a low buzz, her body thick with the russet band that gives her species its name. She lands heavily on a dogwood flower cluster, her weight bending the branch slightly. Her tongue extends to reach the nectar hidden in each small flower, while pollen grains stick to the branched hairs covering her body. As she moves from flower to flower within a cluster, then from cluster to cluster across the tree, she carries pollen between the separate male and female flowers that make up each white display.This exchange feeds both partners in ways that ripple through the late spring ecosystem. The bumble bee stores nectar in her crop and packs pollen into the baskets on her hind legs, carrying protein and carbohydrates back to her underground colony where workers tend developing larvae. The dogwood receives the cross-pollination it needs to set the bright red berries that will ripen by late summer, feeding migrating birds when insects become scarce. Other native bees join the feast: smaller sweat bees that nest in the ground beneath the trees, and solitary bees that emerge from winter hiding places in dead wood and leaf litter. Beetles climb up from the forest floor, their movements slower but no less purposeful as they chew pollen and lap nectar from the accessible flowers.The dogwood's timing anchors this burst of activity. Its flowers open just as many insects complete their spring emergence, providing concentrated nutrition when other flowering trees have finished their brief displays. The tree blooms for only two weeks, but those weeks coincide with the peak demand from new bee colonies, emerging beetles, and the caterpillars of moths that will pupate in the soil below. Even the invasive spotted lanternfly, now established in these urban forests, feeds on the tree's sap, though it gives nothing back in return.Close your eyes and listen for the steady hum that fills the air around a flowering dogwood. The sound deepens and fades as bumble bees move between trees, punctuated by the higher buzz of smaller bees and the occasional rustle of a beetle navigating between flower clusters. When you open your eyes, watch how the white bracts catch and hold the filtered light beneath the canopy, each tree a bright anchor in the green understory.