Golden Northern Bumble Bees turning up across the NYC metro region
July 28, 2026
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.
Flowering dogwood feeds the spring insects
May 28, 2026
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.
Monarchs arrive as milkweed opens
June 24, 2026
Along the weedy margins of Brooklyn's open lots and park edges, the common milkweed is in full leaf now. The broad, paired leaves are a deep matte green, soft on the underside, and the plants stand knee-high or taller in the places where the soil has been disturbed enough to let them take hold. If you find a patch, look at the undersides of the leaves. You may already see what is coming. Monarchs are moving through the region in early summer, and the females are laying. Each egg is a single pale dot, smaller than a pencil tip, pressed to the underside of a milkweed leaf with a small amount of adhesive. A female may lay several hundred eggs over the course of a summer, but she places them one at a time, often one per plant, spreading the risk. When the egg hatches, in three to five days, the larva eats its own eggshell first, then begins on the leaf itself. Common milkweed produces a sticky white latex that contains toxic compounds called cardenolides. Most insects cannot feed on it at all. The monarch caterpillar can, and it sequesters those compounds in its own tissues as it grows. By the time it pupates, it is unpalatable to most birds. The milkweed's defense becomes the caterpillar's defense. The relationship is not mutual in the strict sense — the milkweed gains nothing from the monarch — but the monarch is entirely dependent on plants in this one genus. Remove the milkweed, and there is no workaround. In the same disturbed ground where milkweed grows, horseweed is coming up fast. Horseweed is a native plant, a tall and bristly annual in the aster family that colonizes roadsides, vacant lots, and any ground that has been scraped or compacted. It does not host monarchs. But later in summer, when it flowers, its small white heads will draw a range of small pollinators, and the monarchs that emerge from their chrysalises in August and September will need nectar sources for the long flight south. Horseweed and milkweed share the same ecological address: edges, gaps, disturbed ground, places that are not managed closely enough to be lawns but not wild enough to be forest. In a city like Brooklyn, that kind of ground is exactly where monarchs find what they need. The red milkweed beetle is already on the plants. It is a striking insect, bright red with black spots, and it feeds on milkweed throughout its life cycle. Like the monarch caterpillar, it tolerates the latex and accumulates the toxins. The large milkweed bug does the same, piercing the seed pods to feed on the developing seeds. A single milkweed plant in early summer can be carrying the eggs or larvae of multiple specialist insects at once, each one using the plant's chemistry in its own way. The common eastern bumble bee works the flowers for nectar and pollen without any of that chemical tolerance — it simply avoids the latex by working the open florets where the sticky sap is not exposed. The monarchs you see here are not the ones that overwintered in Mexico. That generation died in the spring. The butterflies laying eggs on Brooklyn milkweed now are their offspring, born somewhere to the south in April or May and continuing north. Their own offspring will be the ones that fly back to Mexico in the fall, navigating by the sun and by some sensitivity to the earth's magnetic field that researchers are still working to understand. The insect on the leaf in front of you has never made that journey and never will. It is here to reproduce, and the leaf it chooses determines whether its line continues. The milkweed flowers are just opening on some plants, the pink-purple globe clusters tight and fragrant in the heat. Find a patch in sun and stand near it for a moment. The bumble bees are audible before they land.
