The Piping Plover at Lac Saint-Pierre

The American Golden Plover

The American Golden Plover (Calidris pusilla)

The American Golden Plover is a small, delicate-looking wading bird characterized by subtly iridescent plumage and a strong migratory capacity. Its presence in the wildlife reserve highlights the importance of coastal and marsh habitats for avian biodiversity.

Sexual dimorphism

The American Golden Plover exhibits weak sexual dimorphism.

Males: During the breeding season, males display slightly accentuated metallic reflections on certain parts of their plumage, making their appearance more dazzling.
Females: The plumage of females is generally similar but remains more discreet, which allows them to benefit from effective camouflage during nesting.

Size and wingspan

Size: The American Golden Plover is about 15 to 17 cm long.
Wingspan: Its wingspan is between 30 and 35 cm, allowing for great agility in flight.
Weight: The weight varies around 20 to 30 grams, in line with its small size.

Beak and legs

Beak: Its thin, pointed beak is adapted to a diet consisting mainly of invertebrates, facilitating the capture of small crustaceans and insects present in wetlands.
Legs: The relatively short, slightly webbed legs provide good mobility on wet sand and in coastal marshes.

Social behavior

The American Golden Plover is often seen in flocks, especially during migratory periods.
Migratory groups: Outside the breeding season, it gathers in small or large groups, thus promoting collective protection and efficient food search.
Interactions: During these gatherings, social behaviors such as display and visual communication strengthen bonds between individuals.

Voice

The American Golden Plover emits discreet vocalizations, often in the form of trills or short whistles, which serve primarily to maintain contact between members of the group during movements.

Breeding Habitat

Inland Wetlands: During the breeding season, the American Golden Plover frequents inland marshes and ponds, where dense vegetation provides effective camouflage and secure nesting.
Banks and Riverbanks: The edges of bodies of water, rich in grass and shrubs, constitute protected nesting sites.

migration habitat

Beaches and Coastlines: During migrations, it uses coastal areas, particularly beaches and estuaries, to feed and rest during long migratory journeys.
Flooded Areas: Flooded areas provide high prey availability and temporary resting sites.

wintering habitat

Coastal and Saline Areas: In winter, the American Golden Plover migrates to coastal areas and salt marshes, where conditions allow it to maintain a continuous feeding.
Inland Lakes and Estuaries: Some individuals also overwinter in unfrozen inland bodies of water, taking advantage of an invertebrate-rich environment.

habitat features

Shallow and Marshy Waters: The preference for shallow waters makes it easier to find prey and move around easily.
Dense Vegetation: The presence of abundant vegetation along the banks provides both optimal camouflage and shelter from predators.
Water Quality: Clean, invertebrate-rich waters ensure a constant food supply.

Adaptation to the Habitat

Its slender body and short but powerful wings allow it to perform fast and precise flights, essential when moving between habitats.
The thin, pointed beak is an optimal adaptation for capturing small prey in varied environments.
Its migratory and social behaviors give it great flexibility to temporarily exploit different types of habitats depending on the seasons.

Les oiseaux du lac st-pierre

Les
hérons