BIRDING THE BLUFF

Montaña de Oro State Park - Bluff Trail - The day was perfect, wind silent, sky semi-cloudy.  At the small cove, often referred to as Smuggler's Cove, I was delighted to to see a pair of Black Oystercatcher (Bloy) nesting half way down from the top and a tad to the left of the cleft in the shale rock. (the happy couple in below photo)   A parent to be was sitting on the nest.  At the present time there are three nesting pair at Montaña de Oro (MdO).  Both adults incubate eggs and tend to the chicks. 

Fortunately I saw only five Pelagic Cormorant (below), as they are known to prey on Bloy eggs.

I have a special fondness for Pigeon Guillemots.  They arrive every spring to nest in holes in the eroding cliffs.  In August they will return from whence they came.  The Guillemots high pitched chatting was magic to my ears.  They feed tiny fish to their nestlings. 

In the cove Turkey Vultures were having a bit of a tiff over a well seasoned carcass.

The flowers were astounding!  In my many years at MdO I have never seen such a dense and brilliant display of Eriophyllum staechadifolium, commonly called Lizard Tail or Seaside Woolly Daisy.

Other Birds - Spotted Towhee (photo), always perched where it can be readily seen, Song Sparrow, White-crowned Sparrow, Common Yellow-throat singing, California Thrasher with an impressive repertoire, and hundreds of Brown Pelican flying north.  They often can be seen flying in a line, following the contours of the coastline.  Hint for the next time you are birding - Don't forget to look up.

 

Montaña de Oro - Black Oystercatcher Monitoring Update

Montaña de Oro State Park - Danger Sign Site - Update on Black Oystercatcher (Bloy) monitoring.  Thirty-one days have passed since I began monitoring the Bloy pair at Danger Sign.  The shale formation they are inhabiting is close to the bluff but not connected.  Most of the time, with the exception of very low tides, it is surrounded by water.  Numerous formations that jut into the sea protect the pair's rocky home from the pounding surf.

Beginning May 21, I have monitored the site eight times.  On June 10th, as I neared the site, I could hear alarm calls.  More than likely the pair were chasing off Oystercatcher intruders.  Within a couple of minutes the pair returned.  Neither of them settling onto the nest.  Perhaps there had been a successful hatching.  One of the pair flew off, soon to return with a white morsel clutched in its bright red bill.  A chick appeared for a few moments.  At the same time I thought I might have seen a smidgen of a second chick.  Yeah!!

Two days later I was back.  There were two chicks.  The parents were occupied in full-time provisioning. One was usually standing guard while their mate was off gathering food. 

My last visit was on Friday the 19th. - Two chicks - Parents bringing in the food.  One chick was visible, the other one mostly hidden.  When both parents are foraging both chicks remain out of sight.

In the above photo, this adventuresome little chick is about nine days old.  My next monitoring date is Tuesday the 23rd.  Can hardly wait.

Peregrine Falcons at Montaña de Oro Update

Peregrine Falcon juvenile (2008 photo by Mike Baird) fledged on Morro Rock in Morro Bay Calif.  Morro Rock is approximately 10 miles north of Montaña de Oro (MdO).  The Morro Rock Peregrine could be related to one of our MdO Peregrines.

Now it is 26 days after the Peregrine Falcon posting of April 2nd - The question whether the Peregrines will nest in the Smuggler's Cove cliff site at MdO remains unanswered.  This morning at 10:21 there were no Peregrines in sight.  At 10:42 the pair arrived. The lonely male (below) went into the possible nesting site; after a few minutes he perched in the opening. 

The female, who appeared to be preening, was located (below) in the mating, feeding area (see post of April 2)  http://birdingthecentralcoast.blogspot.com/2018/04/the-peregrine-falcons-have-arrived.htm

Peregrine Falcons generally reach breeding maturity at two years of age.  Since the MdO female is a sub-adult and not fully mature, her chances of producing fertile eggs and nesting are slim.  But I continue to have hope that our pair of Peregrines will raise a family.

The Peregrine pair on the north side of Morro Rock began incubation on March 12th.  And the Peregrine pair on the south side of the Morro Rock had yet to nest as of the 12th.  Perhaps delayed nesting is not that unusual and eventually the MdO pair will nest in the not too distant future.
             Stay tuned for the next episode.

For info on the Peregrines of Morro Rock go to  http://pacificcoastperegrinewatch.org/

The Pigeon Guillemot - Montaña de Oro State Park

The Pigeon Guillemot - Cepphus columba - arrives on the Central Coast in mid-April and departs for the open sea in mid-August.  At Montaña de Oro (MdO) the numerous holes in the cliffs provide nesting sites for the arriving Pigeon Guillemot.

Eggs (1-2) usually hatch in about a month.  After 35-45 days the chicks fledge, flying out to sea.  They will no longer be dependent upon their parent's care.

The Guillemot on the far right is holding a small fish in its beak (click on photo for larger image).  The little fish is more than likely food for its nestling.

This year's Guillemot population at MdO appears robust.  Last Sunday the sea was calm with a low tide exposing the rocks (top photo).  I counted 40 plus Guillemot bobbing in the sea and 20 more perched on the rocks, and that was just in the area of Spooner's Cove (top photo).  It was a phenomenal day for observing the Guillemot.

Birding Montaña de Oro - Sunday/Wednesday

Birding Montaña de Oro - Sunday/Wednesday

Islay Creek riparian habitat - Right, Islay Creek Road
left 2 mile loop Reservoir Flats Trail

Sunday - Islay Creek is located about 30-40 feet below a rough, unpaved road that follows the creek east for about 3 miles.  Due to the intense growth of Willows, Oak, Sycamore and native shrubbery, there are few places along the road where one is able to glimpse the water, much less see a tiny bird.

Since it was unlikely that I would see a bird in the creek, I identified the majority of them by sound - Birds heard but not seen were: Pacific Flycatcher, Golden-crowned Warbler, Wilson's Warbler (below), and Northern Flicker. Wilson's Warbler were numerous.  I was fortunate to see Mr. Wilson's as he flitted through a cluster of roadside Willow. 

  Wilson's Warbler - 3-5 inches, .30 ounces, is considered by Audubon, "Climate Threatened."

In the brush along the road were California Quail, Bewick's Wren, California Thrasher, Spotted Towhee, Wrentit, a very perky Blue-gray Gnatcatcher, and a flock of Bushtit (below).

One of the perks of birding is the other animals one might see.  An Alligator Lizard was in the middle of the road.  It is much longer and thicker than the local lizards, about 15 inches.  The lizard was in no hurry to move.  With my walking stick I encouraged it to move into the brush, as I did not want it to be run over by a bicycle.

 

Sticky Phacelia blooming on the north side of Islay Creek Road

Wednesday - Hazard Canyon, a 1.5 mile road/trail that intersects Manzanita and East Boundry Trails.  The canyon is narrow and has a small seasonal creek.  The birds were the same as the Islay Creek birds with a few exceptions: Swainson's Thrush, a pair of Nuttall's Woodpecker checking out a hole in a Willow tree, and two active Scrub Jay (below).   

One of the marvelous aspects of Montaña de Oro State Park is the vast majority of it is inaccessible to humans.  Poison oak, stinging nettle, and densely vegetated creeks and hills keep people on the trails, which allows birds and the park's wild animals to thrive. 

Pre-Spring Observations

Montaña de Oro State Park - Oystercatcher's can often be seen on the rugged shale formations that reach out into the sea (above photo).   A few days ago observed three Oystercatcher's participating in what could be described as a mating ritual.  A pair possibly males, while cheeping loudly, were in unison, prancing and bobbing their heads while another Oystercatcher (below photo), possibly a female and slightly larger than the two prancers, sedately observed the action.  

Obviously she was not impressed with their performance, as she flew off.  The two males wasted not a moment, cheeping loudly, they dashed after her.  To my disappointment they flew out of sight.

Continuing with Montaña de Oro Observations - About two weeks ago California Thrasher, known as an exuberant songster, began his spring song fest.  Thrasher vocalizations mark territory, demonstrate motivation, and if luck prevails, attract females.  Like their cousin, the Northern Mockingbird, they are mimics.  The more varied their repertoire, the greater their attraction to females.

One of the delightful aspects of Thrashers is when they sing, they are perched atop a large bush and easy to observe.  The California Thrasher in the photo is perched on a Dune Lupine Bush.

Another songster that has begun his pre-spring vocalization at Montaña de Oro is the perky Wrentit.  Although the male sings all year, as spring approaches his song is more frequent.  Unfortunately, unlike the Thrasher, Wrentits are difficult to observe, as they spend most of their time well hidden in the brush, which this year is dense due to abundant rain.  When birding the coastal areas of California and you hear a song ending in a descending ping pong ball trill, you know that somewhere in the brush is a Wrentit. 

Early Birds

This weekend I had the pleasure of birding the Montaña de Oro Sandspit (above) and the Marina Boardwalk.  I was looking for Early Birds, birds that breed elsewhere and come to the Central Coast for the fall, winter, and early spring.


 Sandspit - A flock of 30 Brandt's Cormorant were resting on a rocky point.  Brandt's can be seen on the central coast all year, but they have been missing from Montaña de Oro's rocky shoreline.  I was rather happy to see them.

 On the beach 40 adult and one immature Herrmann's Gull (above).  Heermann's is classified as "Near Threatened," as 90% of their breeding is confined to Isla Raza in Baja California.

 At the edge of the surf about 30 Whimbrel (above) fed, dashing hither, thither and yon. 
Whimbrel breed in Alaska and Arctic regions of Canada and Greenland.

Although the morning was heavily overcast, fortune shined.  Above the high tide line were two endangered Snowy Plover.  In the wet sand, feeding on a bird carcass, were two Turkey Vultures.  Diving in the rugged surf about 10-15 Surf Scoter.

 Marina Boardwalk - Feeding in the pickleweed was a mixed flock of several hundred Whimbrel, Long-billed Curlew, and Willet (above).  Many were in transition between their breeding and winter plumage.  In the center of the bay rested about 50 amazing White Pelican (below).  They can weigh 30 pounds and their wing span can exceed nine feet.  They are fabulous to see in flight.

 In the brush two Bewick's Wren were active, heard White-crowned Sparrow and House Finch.  Black Phoebe was sallying forth from her perch on the boardwalk to snatch unsuspecting insects.  I am seeing fewer birds everywhere.  Unfortunately drought and global warming is taking its toll.

Day of the Hermit Thrush

A few days ago, hoping to see Warblers,  I birded along the creek side of the campground in Montaña de Oro State Park (MdO).  I was listening for a mixed flock, of which the vangards are the Chestnut-backed Chickadees and the Bushtits; fortunately these little darling are constantly chattering which gives one a hint that the flock may be near.  While I was peering into the dense, dark shade of an old Monterey Cypress looking for the flock, my eye caught movement in a thick, nearby Blue Elderberry shrub. A Hermit Thrush (above) was feeding on ripe blueberries.  I watched till the little beauty flitted into the shrubbery. 

The Hermit Thrush is similar in size to an American Robin, but smaller.  They often stand upright with their slender bill slightly raised.  A variegated bold eye ring emphasized their large dark eye; they flit much less than a Warbler and can often be seen perched on a twig looking very alert.

Back to the flock as it continued to move through the Cypress.  Birds observed, Townsend's Warbler, Orange-crowned Warbler, Hutton's Vireo, Chestnut-backed Chickadee, Yellow Warbler, and a Nuttall's Woodpecker.   To my surprise I saw two more Hermit Thrush, not a usual happening, as they are mostly solitary, especially in the fall/winter.

 The rest of the campground was very quiet.  Due to the prolonged drought there is less for the birds to eat, barely any insects, and both seeds and berries are in sparse supply.  Now is when we humans need to become advocates for the birds.  If at all possible put out birdseed and or suet and water, especially if you are in California.

The Pigeon Guillemots of Montaña de Oro

Of all my favorite birds, the Pigeon Guillemot (Cepphus columba) is number one.  During the breeding season, their rounded body is very black with brilliant white wing patches (photo by Mike Baird).  Their legs, feet, and mouth lining a brilliant orange-red; the feet are so red they look like they have been photoshopped.

Montaña de Oro's rocky shoreline with all its nooks and crannies provides the Pigeon Guillemot with ample areas to nest.  Like clockwork, every March, these hardy little sea birds arrive in Montaña de Oro.

 The Pigeon Guillemot uses its short strong wings to swim while searching for food, diving to depths of 150 ft.  When not feeding, they often rest on cliff edges (above photo).  By vigorous flapping of their wings, combined with the use of sharp claws on webbed feet, the Guillemot is able to climb the steep, rocky cliffs. 

A few days ago, from the Bluff Trail, I observed several pairs of Guillemots acting very frisky, with much splashing, wing stretching, and shallow dives.  I focused on a pair that was the easiest to view. For the ease of explanation I will call them Frank and Doris.  I would describe their antics as a pre-mating ritual.  Like some males Frank was the aggressor.  Doris was enjoying the attention but was rather standoffish, not ready for the grand finale.  Frank would close in, and Doris would scoot out of reach.  They participated in this behavior repeatedly.  Twice they flew to and from a nesting hole in the cliff. 

 As Frank (above photo, lower right) chased Doris he was constantly chatting.  Unable to understand the high pitched sounds, I made an unscientific assumption.  Frank was telling Doris that time was of the essence, as they must return to sea mid August.  He was reminding her that incubation takes at least 30 - 32 days, and then there is the intense 35 - 50 days of feeding the little darling; two eggs may be laid, but only one chick will fledge. (below photo - Doris checking out a nesting area)

Both parents incubate the egg and bring small fish to their chick.  Success raising a chick to maturity depends on the weather, the impact of human activity, and the warming ocean and its disastrous affect on the food chain.  Hopefully, Doris and Frank will incubate an egg, produce a healthy, well adjusted nestling which will one day return to the rocky cliffs of Montaña de Oro.

Day of the Oystercatcher

Mid morning - Montaña de Oro Bluff Trail - The resident Black Oystercatchers were carrying on something fierce - in groups of four to six, they were flying noisily between rock formations, and I do mean noisily. (above photo - Oystercatcher habitat)

Their high piercing sound, which makes them easy to identify, can be heard at a distance of at least a 1/4 mile.  The Oystercatchers were very active along the bluffs this warm, spring like morning.

Fortune shined when the opportunity arose to observe two separate flocks of four, flying between formations.  The lead pair would find a suitable rock and land. The second pair looking like they were going to land in the same area, would suddenly veer off to a nearby, but not close, rock. (Oystercatcher pair by Mike Baird)

Being a romantic at heart I thought this behavior might indicate the beginning of the breeding season, as fledged juveniles do not go off on their own until the next breeding season.  Perhaps this behavior was an indication that breeding season was near and that the juveniles now have to face the reality that adulthood is just around the next rock. (flying Oystercatchers by Mike Baird)

Today, Black Oystercatchers dominated the scene.  I wonder what tomorrow will bring. 

Birding Islay Creek

Yesterday Morning walked about a mile and a half up Islay Creek in Mondaña de Oro State Park.   Weather was mild and sunny.  The creek, located on the south side of the trail, is dense with a robust growth of vegetation consisting, primarily of Willow, Cottonwood, Bay and a few Oaks.  As one progresses up the road, the creek is deeper and farther away.  The adjoining hillsides are covered with lush chaparral; beauty and tranquility prevail.

I was birding by ear - no binoculars.  Wilson's Warbler, one of my many favorites, was carrying on something fierce.  Wrentit sang every time Mr. Wilson paused.  In the distance Swainson's Thrush was singing. See photo borrowed from Wikipedia (thank you very much).

As I progressed up the creek the Swainson's Thrush was dominant, nearly drowning out Orange-crowned Warbler, Pacific-slope Flycatcher and the precious Western Wood-Pewee.  From what I heard this perky, migrant Thrush had found a home in Islay Creek.

To hear the song of the Swainson's Thrush I am including a link to a 22 second video.   The loudest sound is a Calif. Quail.  The flute like sound is the song of the Thrush.

http://youtu.be/U6ijBBgJ-3o

A SPRING WALK ALONG THE BLUFF TRAIL

Montaña de Oro was spectactular yesterday morning; powerful waves pounded the rocky cliffs.  Along the Bluff Trail the abundant coyote bush sparkled from last night's brief rain.  I was traveling light, only a camera and my trusty iPod Touch.

The Pigeon Guillemots were calling to each other; they have a very high pitched whistle.  The water was so rough it was difficult to see them.  Soon they will be nesting in the cliffs.  Heard and saw several Calif. Quail.  Wrentit were singing about every quarter mile. 

 A flock of Pelagic Cormorant with a few of the larger Brandt's Cormorant were doing their morning preening.  I do believe I have never seen this rock without a flock of Pelagic Cormorants on it.  Not in the photo, lower down the rock, was a pair of Black Oystercatcher.  Both the Pelagic and Brandt's Cormorant nest on Morro Rock.  The Pelagic also nests on narrow ledges of Montaña de Oro's cliffs.  Counting the gulls and Cormorants, only observed 10 species of birds. 

From my observations along the trail, land birds were scarce; the on-going drought is taking its toil on our bird population.  Birds that were missing, Golden-crowned Sparrow, Song Sparrow (always singing this time of year), Bewick's Wren (no males singing from atop a bush), Say's and Black Phoebe (no insects for them to eat), Anna's Hummer (nothing blooming), and no Hawks.  Along the Bluff Trail spring was silent.