Field Guides/Oshawa/Nature & Discovery
Strong
Best WindowSpring (April–May) and fall (September–October) for songbird migration peaks; year-round for general wetland viewing
Variantsbirding · nature-interpretation
RegionOshawa, Ontario

Nature & Discovery.

Oshawa Second Marsh is the regional anchor for birding in Oshawa — a 137-hectare coastal wetland on Lake Ontario, designated by the Province as both a Provincially Significant Wetland and a Provincially Significant Area of Natural and Scientific Interest, with over 380 plant species and 305 bird species recorded. The adjacent McLaughlin Bay Wildlife Reserve carries about seven kilometres of viewing trail and platforms — including the multi-sensory Dogwood Trail — and Pumphouse Marsh sits along the same Waterfront Trail strand.

Nature & Discovery in Oshawa
01 — What to know

The brief.

The Lake Ontario coastal-wetland complex of Pumphouse Marsh, Oshawa Second Marsh, and McLaughlin Bay Wildlife Reserve runs continuously along the Waterfront Trail through the city, making a roughly five-kilometre birding strand on foot or bike. Second Marsh is the largest of the three wetlands at 137 hectares; access is on the Waterfront Trail along the west side, since the interior woodlot trail is closed for falling-tree risk from emerald ash borer.

McLaughlin Bay Wildlife Reserve includes viewing platforms and the wheelchair-accessible Dogwood Trail, designed as a multi-sensory trail for partially sighted visitors. Spring (April–May) and fall (September–October) are the peak migration windows; year-round viewing for resident waterfowl and marsh species.

02 — Locations

3. places.

  1. 01

    Oshawa Second Marsh

    137-hectare Provincially Significant Wetland and Provincially Significant Area of Natural and Scientific Interest on Lake Ontario; over 380 plant species and 305 bird species recorded.

  2. 02

    McLaughlin Bay Wildlife Reserve

    Lakeshore reserve adjacent to Second Marsh; viewing platforms, multi-sensory Dogwood Trail, ~7 km of trails.

  3. 03

    Pumphouse Marsh

    Coastal marsh on the Waterfront Trail near downtown waterfront.

03 — Conditions

Today's read.

Air Quality
14
eu-aqi · low
UV Index
1.6
scale 0–11
Humidity
66%
relative
Visibility
27.0 km
clear
Temp
+6.4°
H 13° · L 1°
Sun
05:52 / 20:31
14h 39m daylight
A+
Prime conditions for nature & discovery

Cool but comfortable for layered effort · light winds · clean air.