The birds are readily seen and heard in wetland habitats during the summer, in bushes and meadows near watercourses.
The blackbird is a common migrant and abundant summer resident from
late March to late November
at Presqu'ile provincial park, roughly
40 km to the south, with an extreme early
sighting on 22 February and average departure in mid-November.
Large flocks may be seen over the marshes in the fall, the largest
recorded exceeding 2,000 birds, on 25 October 1988
Only five winter sightings have been reported on the
Presqu'ile peninsula, although the birds overwinter at corn cribs in the
Brighton area (LaForest, 1993, pp.369-371).
In Peterborough county, to the northwest, the red-wing
has been noted as early as 21 February. In spring, the
males usually arrive 2-3 weeks before the females. Most
leave by early November, but a small number overwinter in the county
(Sadler, 1983, pp.155,182).
LaFOREST,SM (1993) Birds of Presqu'ile Provincial Park. Friends of Presqu'ile Park / Ontario Ministry of Natural Resources, 436pp.
SADLER,D (1983) Our Heritage of Birds: Peterborough County in the Kawarthas. Peterborough Field Naturalists / Orchid Press, Peterborough, ON, 192pp.