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Monarch butterfly seen again in Bloomfield

A Monarch butterfly was observed on 2026-09-08 in Bloomfield within the ecosystem, during fall migration season. The species is proposed for threatened listing under the Endangered Species Act; this record documents its presence in the region during a critical migratory period.

Ontario County drought stress eases

Abnormally dry conditions affecting Ontario County dropped to 14.96% in the week of 2026-09-22 to 2026-09-28, continuing the substantial recovery from 90.16% in early September. Water stress that limited amphibian breeding habitat through late August has eased, restoring conditions for reproduction and emergence of native frogs and salamanders.

Japanese knotweed found near Katowice and Tarnowskie Góry

Japanese knotweed was recorded on 2026-09-15 near Katowice and on 2026-09-12 in multiple sites including Tarnowskie Góry and Katowice. The plant produces white flowers in late summer and early autumn, the phenological window during which fragmenting rhizomes present peak dispersal risk, particularly along riverbanks where human activity may carry root segments downstream.

Giant floater mussel found in Victor

A Giant Floater freshwater mussel was recorded on 2026-09-23 in Victor, NY, within the ecosystem's watershed. This large, fast-growing mussel indicates suitable lacustrine and riverine habitat with adequate substrate and water quality for a species uncommon but apparently secure in New York.

European mantis seen in Szczerbice

European Mantis was observed on 2026-09-26 in Szczerbice. September marks the start of mating season when females feed heavily and lay their eggs before dying with the first hard frost, making this observation a sign of the species' reproductive window in the region.

Giant goldenrod found in Piekary Śląskie

Giant goldenrod, a North American invasive species, was recorded on 2026-09-20 in Piekary Śląskie, south of Gliwice. Like Canada goldenrod also present in the region, it flowers in late summer and competes aggressively with native vegetation through both rhizomal spread and seed production.

Monarch butterfly spotted in Bloomfield during migration

A Monarch butterfly was observed 2026-09-08 in Bloomfield during the fall migration period. Monarchs are listed as Proposed Threatened under the Endangered Species Act, and this sighting documents the species' passage through the region as it journeys toward overwintering grounds in Mexico. Peak migration in New York occurs in September, making this the critical window for refueling during their thousand-mile journey.

Hummingbird hawkmoth seen in Gliwice

Eurasian Hummingbird Hawkmoth was observed on 2026-09-27 in Trynek Cichociemnych, Gliwice. This late-season record marks the tail end of autumn migration into Central Europe before the species withdraws southward for winter.

Pallid harrier seen at Katowice--Brynów

Pallid Harrier was reported on 2026-09-20 at Katowice--Brynów, confirmed as notable by eBird reviewers. The species breeds in eastern Europe and migrates from August to September toward Africa and India, with Central Europe lying along its migration route, making early-to-mid September sightings consistent with southbound passage.