This is the time of the year when you go for a walk at the San 
Elijo Lagoon, you may be rewarded with a sight of some newly arrived birds. Yes, 
this is the season we have been waiting for, the time of migration when we see new visitors every day!
Western Grebe..."Aechmophorus occidentalis". They measure 25 inches long with a wing span of 24 inches.
They are the largest of the Grebes.
They breed on large lakes and winters on the coastal 
estuaries and shallow bays.
They are well adapted for living in water and diving for 
prey. All grebes have lobed toes which are great for propulsion and 
steering underwater. Usually they are found foraging near 
the surface of the water but they can dive as deep as 90 ft when they are 
at sea or 
on large lakes.
on large lakes.
Western Grebe's can be confused with 
Clark's Grebes. The Western Grebe has black marking on his 
crown and head which extends below the 
eyes and Clarks Grebe will 
have white around the eyes with the black marking from his head reaching down only to
the eyebrow.
have white around the eyes with the black marking from his head reaching down only to
the eyebrow.
On the Western Grebe, the beak is olive /yellow in color 
and the shape is dagger like. 
They mostly eat fish... catching them with their bill but they can also use it as a spear
to catch their prey.
They mostly eat fish... catching them with their bill but they can also use it as a spear
to catch their prey.
Interesting fact about these grebes is that they ingest a 
lot of their own feathers (taken from belly and flank area). It is thought to be 
to pad their stomach from sharp fish 
bones and 
fins and also as a base material for pellet castings. *(All info. from the Sibley Guide to bird life & behavior.)
fins and also as a base material for pellet castings. *(All info. from the Sibley Guide to bird life & behavior.)
They have been observed diving for fish at night but also 
seen hunting during the day. 
But most of the time when I have observed them, they are usually sleeping on the water. However, I have never seen them on land.
But most of the time when I have observed them, they are usually sleeping on the water. However, I have never seen them on land.
Two winters ago, as I was standing on the 
bridge photographing birds  when I captured a Western Grebe diving and chasing 
after a school of fish. The fish were in a panic and  breaking the surface of the water.  The 
splash and the ring of turbulence behind the bird 
is from his powerful giant flipper like lobed toes. The Grebe twists and turns
underwater hunting his prey.
is from his powerful giant flipper like lobed toes. The Grebe twists and turns
underwater hunting his prey.
The Grebe is moving with amazing speed. I have 
fished quite a bit  in my life and I have to say the Grebe moved as fast as a billfish going 
after bait but with the neck of a rattlesnake ready to strike! Look at the fish 
evading capture by skipping across the 
surface!
This photo is a split second before he breaks the surface 
of the water.. he's body is like a torpedo coming to the surface...you can see the water displacement as it hugs his body.
He breaks the surface and at this angle, you can see 
that he has the perfect feet ( lobed toes) to help him dive and move 
with so much power underwater..but there is a price to 
pay for being a super swimmer. The leg placement on the Western Grebe is so far back
on his body, to give him maximum swimming and diving ablility, the grebe is not capable of
walking on land. This photo shows the lobed toes and how far back the legs are set on its body.
pay for being a super swimmer. The leg placement on the Western Grebe is so far back
on his body, to give him maximum swimming and diving ablility, the grebe is not capable of
walking on land. This photo shows the lobed toes and how far back the legs are set on its body.
As the two Western Grebes swim out of camera range, I walk to the far south 
end of the trail looking for other bird subjects.  There are lots of Mallards resting and foraging along the bank of the tide channel.. A 
beautiful male Mallard shows off his new breeding plumage
This drake appears that he already has a mate. The female Mallard is 
sticking close by.
I spot a California Clapper Rail out foraging right below the trail. The 
tide is coming in fast and the lagoon is looking like a lake again. 
He shows us that he also can forage underwater...LOL, just his head of 
course. 



















 
No comments:
Post a Comment