Western Grebe (Aechmophorus occidentalis) lives in freshwater lakes across Western North America. It feeds on fish and insects. Its conservation status is Least Concern.
Fascinating facts about the Western Grebe
- The western grebe stretches up to 75 cm long, weighs as much as 2 kg, and spans 102 cm across its wings, about the length of a school ruler and the weight of a small sack of flour. Its average body mass sits around 1.4 kg (49 oz). In the wild it can live up to 14 years (132 months), a lifespan comparable to a teenage human. Such size and longevity make it the heavyweight champion among North American grebes.
- Western grebes begin building their floating nests from late April through June, using plant debris and sodden material, and both sexes keep adding to the structure while laying. The female lays three to five bluish-white eggs, with an average clutch of three eggs per season, and the embryos hatch after about 23 days. After hatching, parents trade incubation duties for weeks, feeding each other to keep the female energetic for egg production.
- A western grebe dives beneath the surface to snatch carp, herring, mollusks, crabs, and salamanders, often peering below the water before plunging. Smaller fish are impaled with its long bill like a heron, while larger prey are grasped and swallowed underwater; occasionally a fish is lifted to the surface, pinched, and then swallowed. This aggressive hunting style lets the bird exploit a wide range of aquatic prey, supporting its carnivorous diet.
- Although classified as Least Concern, western grebe numbers have slipped over the past two decades, pressured by oil spills, insecticide contamination, and the loss of lakes and marshes to development. Insecticides lower breeding success. Habitat destruction shrinks the freshwater wetlands they need for nesting.
- When courting, a pair of western grebes performs a that adds dip-shaking, bob-shaking, and arch-clucking, creating the most elaborate water-bird dance known. These rituals cement pair bonds.
Sources
Every fact above was checked against these pages, and kept only where one of them states it.
At a glance
RangeWestern North America
HabitatFreshwater lakes
DietFish and insects
About the Western Grebe
As the sun rises over the tranquil waters of the western lakes, the Western Grebe emerges, its sleek, black-and-white form slicing effortlessly through the morning mist. With each fluid stroke of its powerful legs, it propels itself forward, its bright yellow eyes scanning the depths below for the fish and insects that will sustain it throughout the day. In a breathtaking display of courtship, pairs of Western Grebes will often rush together, their feet slapping the water in perfect synchrony, a testament to the enduring bonds that unite these elegant creatures.
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