The two-acre quarry pond in Halibut Point State Park, being so close to the ocean shoreline, often hosts gulls and cormorants. The gulls come primarily for rest and fresh-water bathing. They're talkative and argumentative. We can imagine a social, newsy, kibitzing dimension to their gatherings. For cormorants the main draw seems opportunistic. They pursue fish.
Grebe and cormorant on the quarry pond |
One day last month an entirely new bird appeared on the pond, small and mousy except for its boldly striped bill. That feature identified it as a Pied-billed Grebe. It stayed about a week. Being a pescivore like the rest of the grebe clan, it dove frequently beneath the surface to seek a share of the cormorant's minnowy mainstay.
The Pied-billed Grebe |
Most mornings the grebe could be spotted as an unspectacular but fascinating novelty on the pond. Sometimes, confoundingly, it disappeared for long spells without flying away. Cornell University's Ornithology Lab calls it 'part bird, part submarine' with this description on their website:
Pied-billed Grebes can trap water in their feathers, giving them great control over their buoyancy. They can sink deeply or stay just at or below the surface, exposing as much or as little of the body as they wish.
So perhaps it was there all along, submarining.
The Pied-billed Grebe's remarkable foot |
While preening and stretching the grebe reveals that its outsized leg and foot are equal in length to its entire body. The enormous lobed toes that distinguish grebes from other ducks enable strong propulsion as well as great maneuverability. The thighs and 'drumsticks' powering those paddles from beneath the feathers must be unusually muscular.
The grebe stretching its wings |
Grebes get where they want to go primarily by swimming. An anatomical tradeoff has shifted their strength from wings to legs. I never saw this one fly.
A serene moment |
The grebe's original arrival and final departure from the quarry happened through the air, unobserved. Whatever its own business here it provided another interesting focus in the ongoing diversity of life at Halibut Point.
Red-necked Grebe on the quarry |
Several winters ago this cousin of the Pied-billed Grebe made an extended stay at the quarry.
The Red-necked Grebe with a fish |
That bird seemed to be fishing successfully in the pond, but like the Pied-billed Grebe, it didn't take up long-term residence. Quarry life in the Park didn't suit it.
A Red-necked Grebe offshore in winter plumage |
During winter Red-necked Grebes can occasionally be seen along our rocky shore in their customary salt-water habitat. Like loons, they exhibit subdued grayish plumage at that time of year. Until this week I'd never seen one in the striking breeding-season coloration that inspires its name.
A Red-necked Grebe in breeding plumage |
The Red-necked Grebe's elegance at mating time captures the eye both of potential suitors, and of any observer fortunate enough to see sunlight glinting from its transformed feathers and refined silhouette.