Southern New England Coastal Plains and Hills

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.

In New York City's parks this May morning, the canopy has reached its full green density. White oaks spread their new leaves like open hands, sugar maples cast deep shade, and Norway maples drop their winged seeds onto paths below. The air carries the particular richness of late spring: warm, humid, thick with the scent of flowering trees. If you are walking through one of the city's green spaces now, you are entering a landscape transformed by the breeding season.From the dense foliage above comes a sound that cuts through the urban morning: the harsh, metallic call of Common Grackles (Quiscalus quiscula). These large blackbirds, their feathers catching purple and bronze light in the filtered sun, have claimed the newly leafed trees as nesting territory. Males perch conspicuously on oak branches, their yellow eyes bright, tails fanned in aggressive display. They call repeatedly, a grating kee-ahh that announces their presence and warns competitors away. The timing is no coincidence. The full canopy provides what grackles need most: concealment for their nests and abundant insect prey for their young.Females move more quietly through the branches, gathering twigs, grass, and strips of bark to weave into cup-shaped nests. They work methodically, testing each branch for stability, often building directly over nests from previous years. The male's job is territory defense, and he takes it seriously. Watch the dynamics in any park grove and you will see the fierce competition that drives urban breeding. Grackles chase European Starlings (Sturnus vulgaris) from prime nesting spots, engage in loud disputes with American Crows (Corvus brachyrhynchos), and even harass smaller birds like American Robins (Turdus migratorius) that venture too close to claimed trees. This is not cooperation. This is the raw economics of limited urban habitat.What makes grackles successful city nesters is their opportunism. While they prefer insects for feeding nestlings—beetles, caterpillars, grasshoppers found in park lawns and tree bark—they supplement with human food sources. Dropped sandwich crumbs, seeds from bird feeders, even small scraps from trash cans become part of their urban diet. This flexibility allows them to maintain high breeding densities in spaces where purely insectivorous birds might struggle. Their large size and aggressive behavior help them dominate feeding sites, but it also puts them in direct competition with native species trying to nest in the same trees. The result is a breeding season marked by constant territorial skirmishes, loud calls, and the kind of avian drama that makes city parks feel unexpectedly wild.Listen now to the soundscape around you. Somewhere in the canopy above, if grackles are present, you can hear their harsh calls cutting through softer bird songs. The full-leafed trees that seemed so peaceful moments ago reveal themselves as territories fiercely contested. In this late spring light, with its particular golden quality filtered through fresh leaves, the breeding season reaches its most intense phase. The grackles' metallic voices remind you that even in the city, wildness persists in the competition for space, the drive to nest, the endless work of making more life.

The harbor water retreats from the broken concrete and weathered stone, leaving behind a narrow world of pools and crevices that glisten in the late spring light. If you are walking along New York's waterfront this morning, you have arrived at the edge of something ancient. The city rises behind you, but here at the tidal margin, older rhythms persist.A small, stocky bird picks its way across the wet rocks with deliberate steps. The Purple Sandpiper (Calidris maritima) moves like a shadow given form, its mottled plumage blending perfectly with the barnacle-crusted surfaces it navigates. Watch how it works: head down, bill probing into crevices no wider than your thumb, extracting creatures you cannot see. Amphipods smaller than rice grains. Isopods that curl into perfect spheres when disturbed. Barnacle larvae drifting in the film of water that clings to stone even as the tide falls away. This bird has traveled hundreds of miles to find this exact combination of rock and water and hidden abundance.Farther out on the exposed mudflat, where the bottom drops away more gently, a larger silhouette commands attention. The Willet (Tringa semipalmata) stands knee-deep in the retreating shallows, its long bill disappearing into soft sediment with mechanical precision. Its partially webbed toes, unique among sandpipers, spread wide for balance on the uncertain bottom. Each probe brings up invisible prey: small crustaceans, soft-bodied worms, occasionally a tiny fish that flickers silver before disappearing down the Willet's throat. The bird's loud, ringing call carries across the water when it lifts its head, a sound that seems to announce both presence and urgency.These two species reveal how the same retreating tide creates different worlds of possibility. The Purple Sandpiper finds its sustenance in the hardest places, where rock meets water in an ancient conversation of erosion and exposure. The Willet claims the softer margins, where centuries of sediment have created hunting grounds rich with burrowing life. Both birds carry the weight of migration in their bodies. Both must accumulate enough fat reserves in these urban margins to fuel the next thousand miles of their journey to arctic breeding grounds. May's unpredictable weather and shifting tides can mean feast or famine. When conditions align, when the tide exposes fresh hunting grounds just as temperature and light trigger invertebrate activity, these birds can transform themselves in forty-eight hours, doubling their body weight before continuing north.Their presence here, among the piers and jetties where concrete meets harbor, speaks to something remarkable about persistence. These migratory pathways are older than the city that has grown up around them. Each spring, shorebirds navigate by stars and magnetic fields and coastal landmarks that have guided their kind for millennia. They find what they need in fragments: a stretch of riprap, a restored marsh edge, a corner of mudflat between developments. The harbor water continues its patient retreat, leaving behind the gleaming pools and wet stone where ancient hungers meet momentary abundance.

The waters off New York harbor hold their breath in late spring, then exhale in an explosion of microscopic life. Warming currents carry with them the season's first great abundance: billions of copepods (Calanoida) and zooplankton rising from the depths as phytoplankton blooms paint the surface waters green. The ocean becomes soup thick with life barely visible to the naked eye, each cubic meter holding thousands of tiny crustaceans no bigger than rice grains. If you are near the water now, notice how the harbor light has changed, how it catches differently on water made dense with invisible plenty.Into this underwater meadow come the North Atlantic right whales (Eubalaena glacialis). These fifty-ton filter feeders arrive with the precision of clockwork, their migration timed to the ocean's most productive weeks. A right whale's mouth opens like a cathedral door, revealing baleen plates that hang seven feet long like vertical blinds. Water rushes in carrying millions of copepods, particularly the energy-rich Calanus finmarchicus that fuel the whale's massive body. The baleen filters hold the copepods while water streams back through, leaving behind a mouthful of concentrated protein that can weigh a ton in a single feeding session.This convergence represents one of nature's most precisely calibrated relationships. The copepods time their reproduction to the spring bloom of diatoms and phytoplankton, riding ocean currents that concentrate them into dense patches. The whales have followed these same feeding grounds for millennia, their migration routes hardwired by generations of successful feeding. A right whale must consume thousands of pounds of copepods each day during these peak weeks, building fat reserves that will sustain the animal through summer months when food becomes scarce. The whales feed by swimming slowly through the densest patches, mouths agape, their throat pleats expanding accordion-style to accommodate massive volumes of plankton-rich water.But this ancient rhythm faces modern pressures. Right whales number fewer than 340 individuals, making them among the world's most endangered marine mammals. Their dependence on specific feeding areas during predictable seasons makes them vulnerable to ship strikes and fishing gear entanglement precisely when they are most focused on survival. Climate change threatens to shift the timing and location of plankton blooms, potentially disrupting a relationship millions of years in the making. The copepods themselves respond to water temperature changes measured in single degrees, their reproduction cycles shifting with warming seas. Listen now to the water lapping nearby, whether it is harbor waves or distant shore. In that sound is the pulse of an ocean system still holding its ancient rhythms, still bringing together whale and copepod in late spring waters, still exhaling abundance into the warming light.