. The Canadian field-naturalist. 384 The Canadian Field-Naturalist Vol. 94. S ASK ( Figure I. The study area, encompassing Prince Albert National Park and vicinity. grostis canadensis). Narrow-leaved Dock {Rumex mexicanus), and occasional willows (Salix spp.). At its highest point Pelican Island rises m above water level. The shores rise abruptly throughout and are never breached by fluctuating water levels. All southwest-facing shoreline has nar- row sandy beaches, but the remainder is rocky and steep. Soils are shallow, underlain by a thin mantle of sand and large boulders.
. The Canadian field-naturalist. 384 The Canadian Field-Naturalist Vol. 94. S ASK ( Figure I. The study area, encompassing Prince Albert National Park and vicinity. grostis canadensis). Narrow-leaved Dock {Rumex mexicanus), and occasional willows (Salix spp.). At its highest point Pelican Island rises m above water level. The shores rise abruptly throughout and are never breached by fluctuating water levels. All southwest-facing shoreline has nar- row sandy beaches, but the remainder is rocky and steep. Soils are shallow, underlain by a thin mantle of sand and large boulders. Pelican Island and two very small adjacent islands known locally as Rocky Island and Gull Island have been consistently used by colonial nesting birds including White Pelicans, Double-crested Cormor- ants, and Great Blue Herons (Ardea herodias). Soper (1952) also reported nesting by Common Terns {Sterna hirundo). Black Terns {Chlidonias niger). Herring Gulls (Larus argentatus), and Ring-billed Gulls {Larus delawarensis). Wapiti {Cervus elaphus) use Pelican Island as a calving ground, which confirms the absence of large mammalian predators that might disrupt breeding success of the birds. Methods Nest Survey The breeding population was first estimated by. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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