Showing posts with label Bolsa Chica Ecological Reserve. Show all posts
Showing posts with label Bolsa Chica Ecological Reserve. Show all posts

Sunday, 23 May 2010

Bolsa Chica, Los Angeles, California. Terns

A flash caught the attention of a Forster’s Tern as it hunted over the northern lagoon at Bolsa Chica. The tern banked and dived. It hit the water with barely a splash and came up with a little fish.
So started my day and so it continued. I have never shown a particular leaning towards terns before, in fact I sometimes find them rather tricky, but today I developed an unexplainable fascination for the family.
It was early morning, the sun was just up and I was on a raised bank about 5meters above the level of the incoming tide.
Forster’s Terns were searching for food, occasionally hovering at about 8 meters before plunging towards the water, putting me in a good position for photographs. I set my camera to maximum FPS and AI Servo Focus to keep up with the action.
Smaller birds were the Least Terns, They seemed to prefer hovering higher than the Forster’s and would make step descents before taking the final plunge.
Big gull-like terns were Caspian, but I had to check them carefully as there was the possibility of the similar Royal Terns in the area.
A flock of Black Skimmers swooped up and over the road bridge on Warner, back down to the water’s surface and they were gone. They were too quick for me. Now I know that if I venture to suggest that skimmers are terns, some of my more vigilant readers may scoff. They are related in the Charadriiformes order, but then so are curlews, stints, gulls and guillemots. While the Terns are members of the Sternidae family, the skimmers are related within the Rhychopidae. Taxanomically, they are next door neighbours as well as first cousins. Morphologically, they share more similarities than differences. So for today, they will be terns.
The fifth species was Elegant Tern, but again close inspection was required.  Many of the birds heading to roost were flying singly, while later in the day, the birds heading out to feed seemed to be doing so as couples.
There is an area close to the boardwalk where the gulls and terns like to roost, so I would head there later to examine them on the ground, but for now, I was enjoying the Forster’s Terns. As well as fishing, they were pair-bonding. They flew high, the male (I’m assuming) above with his wings held at an acute dihedral angle; the female (by process of assumptive elimination) banked gently from side to side beneath him. On the ground, they offered one another small gifts of fish and kept up a constant chattering.
As the water level rises in the northern lagoon, it is forced through a pipe, under the dividing road and into the next lagoon. More Forster’s Terns were fishing the tide here as it channelled through the pipe.
As they rose up out of the water after diving for a fish, they would shake themselves, much as a dog might, to get the excess water off.
On a hill over looking the lagoons, a small wooded area holds a few Great Blue Heron nests. Earlier in the morning, the herons had been hunting in the wildflower meadows close by until the Red-shouldered Blackbirds chased them off. Now, in the freshwater lake, they were looking to feed their chicks by the more accepted method associated with herons.
Low bank-side weeds provided a stage for the local speciality of Savannah Sparrow. This is Belding’s Sparrow.
After a brief sidetrack, I was back to the terns. An area by the boardwalk has been fenced off and allows the terns to nest in peace and quiet (if such a thing is ever likely at a tern colony). While the Forster’s Terns were still the prevalent species, Least Terns were increasing in number here. A small flock of Elegant Terns were roosting on an island in the back lagoon.
Despite seeing many flying over, the larger terns were not well represented on the roosts. Only when I looked South from the boardwalk did I see an island with a large flock of Black Skimmers and the bigger sternidae.

I would really love to get a picture of a skimmer skimming and an idea struck me. When they came out on to the water to feed, they would probably fly straight up this stretch of water towards me, offering the perfect opportunity to photograph them. So I settled in to wait.
Just in case you are unfamiliar with skimmers, they are famed and named for their manner of feeding.
They fly along just above the surface of the water with their bill open and the bottom mandible lowered into the water.
If the skimming bird crosses the path of a fish, the head flexes down as the bill snaps shut. It seems a bit hit and miss, but it seems to work. If you look closely, you might just see the little morsel the bird in the picture below has caught.
Many times the flock took flight as if spooked by a Peregrine Falcon, but they soon settled again, too far away for a photograph. Then a wonderful thing happened. Another photographer arrived and struck up a conversation about my lens. We discussed stuff for a while before he unexpectedly asked if I would like a go of his lens. It was a Canon 500mm F4, why did he feel the need to ask, I wonder? He set it up on a sturdy tripod with a gymbal head mount and left me to it.
I felt like a Cypriot with a scattergun, shooting everything I could see and soon filled up an 8GB card.
The 4 Black Skimmers above as well as the Snowy Egret, Short-billed Dowitcher and the Marbled Godwit in flight were all taken with the big lens.
 It was certainly a hit with the ladies too, drawing admiring glances and saucy remarks from passers-by. If you have not seen a Canon 500mm F4, picture a bucket on the front of a camera and you won't be far off. 
Other photographers started to arrive as afternoon turned to evening. They told me that skimmers are nocturnal feeders and do not usually make their move until the evening is well advanced. I hadn’t known this, but it fitted in with what I had seen today. At around 18.00, they began to come out onto the water, just one or two to start with, but as the evening drew on, small parties began to feed. I was surprised by their size, speed and manoevreability. It was hard to keep the camera on them.
The boardwalk interrupts their skim path so they suddenly have to pull up and gain altitude to carry them over the rails. When a large bird such as this with such an impressive beak is hurtling towards you at great speed, it is hard not to duck.
As predicted it was only once the light was leaving the sky that they came out in force. Close to the water while feeding, they move in a perfect synchronous formation. In the sky, they are awkward and haphazard.
I had the opportunity to compare the results of both lenses and I must say that the 500mm F4 is a great lens, but….. it does not come with the vital accessory to compliment it, a porter. The size and weight of the lens itself plus the sturdier tripod and gymbal mount would make it impractical as a travelling lens. The 100-400 is much more convenient, light and can be hand held. Therefore, despite Carl having to wrestle it from me, I will not be getting a 500mm F4. I shall stick to the smaller, more useful lens and resign myself to the ladies admiring Carl’s equipment instead of mine.
But just in case I start pining for the power and clarity of the 500mm F4 and begin to resent the limitations of my 100-400 F4.5-5.6, I have included a couple of comparison pictures to commend the smaller lens.
In fact, this may be my favourite one of the skimmers!
Of course terns were not the only birds at Bolsa Chica today.
A few waders were still hanging around after the rest had headed north. Willet, Short-billed Dowitchers and Marbled Godwits were the most numerous. These pictures were also taken with the 100-400.
Species seen; 58

Pied-billed Grebe 1, Brown Pelican 40, Double-crested Cormorant 12, Snowy Egret 15, Great Blue Heron 4, Great Egret 2, Black-crowned Night-heron 6, White-faced Ibis 5, Mallard 10 Gadwall 5, Ruddy Duck 8, Red-tailed Hawk 1, Coopers Hawk 3, American Kestrel 1, Black-necked Stilt 12, American Avocet 15, Grey Plover 4, Semipalmated Plover 5, Kildeer 2, Snowy Plover 2, Short-billed Dowitcher 35, Marbled Godwit 50, Whimbrel 6, Long-billed Curlew 4, Lesser Yellowlegs 2, Spotted Sandpiper 1, Willet 50, Ruddy Turnstone 2, Red Knot 6, Sanderling 2, Western Sandpiper 15, Ring-billed Gull 4, California Gull 25, Western Gull 40, Caspian Tern 30, Elegant Tern 100, Forster’s Tern 200, Least Tern 60, Black Skimmer 200, Mourning Dove 8, Anna’s Hummingbird 5, Allen’s Hummingbird 3, Say’s Phoebe 1, Violet-green Swallow 6, Northern Rough-winged Swallow 2, American Barn Swallow 20, Northern Mockingbird 1, American Crow 6, Common Raven 1, Common Starling 30, House Finch 30, Wilson’s Warbler 6, California Towhee 3, Belding’s Sparrow 8, Song Sparrow 2, Red-winged Blackbird 8

Tuesday, 9 March 2010

Los Angeles, California

My target bird for this week was the California Thrasher, Two elements needed to be fulfilled to have any chance of finding one. First, go to California (Long Beach, Los Angeles was my scheduled trip for this week), secondly, find the right habitat i.e. chaparral. To this end, I found myself at Santiago Oaks Regional Park near Villa Park in Orange County, California (Google Earth 33 49 18N 117 46 31W). I received a very warm welcome from the lady who mans the gate from 07.00 ‘til sunset and takes the $5 fee per car.
Birds were apparent as soon as I stepped out of the car. Some Western Scrub-jays and a Northern Mockingbird flew over, a California Towhee watched from a wall and a flock of parrots, possibly red-crowned, probably alien, called raucously. Rather gallingly, Red-crowned Parrot would be a red crayon bird in other circumstances. Another non-native, a Nutmeg Mannikin, flitted through the Historic Orange Grove.
A belt of trees and bushes run alongside the creek. Here were Acorn Woodpeckers, Bushtits, Spotted Towhees and in the higher branches, Yellow-rumped Warblers. Two woodpeckers landed in a tree just ahead, stopped very briefly and flew off, but they stayed long enough for me to get a good look and identify them as Red-naped Sapsuckers. That made up for the parrots. A persistent drumming proved to be a Nuttall’s Woodpecker which is a handsome bird in the binoculars, but I was unable to do him justice with the camera.
The weathermen had predicted rain, but I have come to take their forecasts with a pinch of salt and had applied my customary factor 30. To spite me it seemed, the sky remained dark, but at least the rain was holding off for the moment.
A flock of birds caught my attention from the top of a leafless tree. It was a mixed flock of House Finches and Lesser Goldfinches. Below them a Cottontail Rabbit was feeding watchfully.
Beyond the riparian zone, trails led up onto the canyon’s slopes and a low scrubby habitat. To my inexperienced eye, this was the chaparral habitat that I hoped would harbour the California Thrasher. Chaparral is a heath-like community of plants characterised by low-growing drought-resistant plants such as Black Sage and California Buckwheat, with emergent individuals such as Yucca and Sugarbush. The actual constituents can vary with altitude and distance from the coast. The normally arid conditions in which it grows makes it prone to fire.
On meeting a group of flower-spotters however, it became clear that the area had suffered a fire a couple of years before and the growth I was looking at was made up of early colonising plants rather than the classical chaparral. I continued for a short while in the pleasant company of a lady named Valerie, before deciding to move on. A White-tailed Kite gave us a fly-by as we made our way back down the canyon slopes.

Bird species; 26

Turkey Vulture 4, White-tailed Kite 1, Red-tailed Hawk 3, White-throated Swift 8, Anna’s Hummingbird 2, Allen’s Hummingbird 1, Acorn Woodpecker 4, Red-naped Sapsucker 2, Nuttall’s Woodpecker 3, Northern Flicker 1, Black Phoebe 2, Bewick’s Wren 2, Northern Mockingbird 1, Ruby-crowned Kinglet 1, Bushtit 6, Western Scrub-jay 20, American Crow 30, Common Starling 12, House Finch 30, Lesser Goldfinch 60, Yellow-rumped Warbler 15, Spotted Towhee 4, California Towhee 6, Song Sparrow 3, White-crowned Sparrow 6, Dark-eyed Junco 4.

Valerie kindly showed me the way to Tuckers Wildlife Reserve at the top of Modjeska Canyon (Google Earth 33 42 38N 117 37 09W). On the right side of the road, opposite the visitors centre, is a reserved parking area.
A family of Acorn Woodpeckers were maintaining their food store in a utility pole while Western Scrub-jays undermined them by stealing their acorns.
A fenced area contains a small circuit leading visitors through well-attended feeders with the added facility of a comfortable, rain-proof porch to watch from. California Quail, White-crowned and Golden-crowned Sparrows, Spotted and California Towhees pecked for feed on the ground. A Northern Mockingbird watched from the top of a cactus.
The day had turned brighter and Valerie heard a thrasher calling from the slopes across the road from the feeder garden. She pinpointed the area with some advice from the warden and we climbed the trail to see if we could find it.
Thrashers respond well to playback and it took only one try to get the result we were after. Valerie called my attention to a sugarbush (?) where a large, curve-billed bird sat in full view. It was a California Thrasher. He sat well for a few photos and even gave his own regional variation of the song. At this point I would like to urge the responsible and conservative use of playback as the breeding season approaches. I am building up a large beer debt with the latest going to Valerie.
Back down in the garden I had a good look at a flock of Band-tailed Pigeons with their distinctive white hind-collar.
The very interesting visitors centre is run by Marcella who offered to let me in early for photographs in her pyjamas. I wonder if I heard her correctly?

Species seen; 19

Turkey Vulture 4, California Quail 5, Band-tailed Pigeon 16, Mourning Dove 6, Anna’s Hummingbird 2, Acorn Woodpecker 4, Northern Mockingbird 1, California Thrasher 1, White-breasted Nuthatch 1, Western Scrub-jay 8, American Crow 8, Common Raven 1, House Finch 6, Yellow-rumped Warbler 16, Spotted Towhee 6, California Towhee 6, White-crowned Sparrow 25, Golden-crowned Sparrow 2, Dark-eyed Junco 4.

The rain had held off and the sun had even come out for a while to make a very pleasant afternoon, but the clouds were gathering again as I closed the circle with a fly-past at Bolsa Chica (for a detailed tour of Bolsa Chica, I refer you to the post of January 2010).
The wind was cold now and the rain was starting, but a quick trot along the boardwalk produced 20+ species. Snowy Plover, Royal Tern were species not seen on the previous visit and a very close look at a Surf Scoter made the discomfort worth while.
Species seen; 25

Pied-billed Grebe 2, Eared grebe 2, Brown Pelican 5, Double-crested Cormorant 60, Great Egret 2, Snowy Egret 8, Mallard 4, Blue-winged Teal 2, Northern Shoveler 2, Greater Scaup 20, Surf Scoter 200, Bufflehead 6, Red-breasted Merganser 2, Ruddy Duck 80, Peregrine Falcon 1, American Coot 40, Snowy Plover 2, Short-billed Dowitcher 120, Marbled Godwit 12, Willet 16, California Gull 80, Western Gull 120, Royal Tern 16, Forster’s Tern 4, Song Sparrow 2.

Without the car on the second day, I took a gentle stroll down to the harbour at Long Beach ostensively to do a bit of gull-watching. A Willet and a Marbled Godwit showed very well on a tiny patch of sand left by the retreating tide.I had never noticed an Eared Grebe’s pre-dive routine before today. The usual appearance of this species on the surface is like a fluffy ball. Just before it dives, it contracts it’s feathers, expelling all the air and dramatically reducing in size and buoyancy. Then it is ready to submerge which it does with an elegant dive. A Snowy Egret allowed me to approach closely and this time I remembered to underexpose by a couple of thirds to prevent his whiteness burning out the detail.
A pair of Black Oystercatchers were working a mussel bed by the Aqualink ferry at Dock 4. It struck me that a boat ride might be a nice idea. At $5 for a 20 minute trip to Alamitos Bay Landing, it seemed good value, so much so that I came back again. As an added treat we made a stop beside the Queen Mary at her permanent mooring.
Birds on the water within the ocean wall included Western Grebe, Double-crested and Brandt’s Cormorants and a Western Gull that took exception to it’s own reflection in the cockpit window.
Surf Scoters were especially common within the docks at Belmont Shore. They gave great picture opportunities when they took to the air as the boat approached.Today was my highest ever Peregrine Falcon count. The first was seen flying straight at me from my hotel window. The second, from the boat and the third was circling the top of the Wells Fargo building at the corner of Pine Street. With such close proximity, the chances are that it was the same bird or part of a pair, but each was separated by enough time, distance and direction to count separately.

Species seen; 20

Horned Grebe 1, Eared Grebe 8, Western Grebe 15, Brown Pelican 8, Double-crested Cormorant 25, Brandt’s Cormorant 2, Snowy Egret 1, Mallard 2, Surf Scoter 600, Peregrine Falcon 3, American Coot 15, Black Oystercatcher 2, Marbled Godwit 2, Willet 8, Common Sandpiper 2, Heerman’s Gull 4, Ring-billed Gull 6, Californian Gull 14, Western Gull 40, Yellow-rumped Warbler 15.

Thursday, 14 January 2010

Bolsa Chica Ecological Reserve, Los Angeles.

The Bolsa Chica Ecological Reserve is about miles 25 down the coast from Los Angeles. The bus schedules do not lend themselves to this particular journey. Do NOT try this on a Sunday! I did, but I am a trained professional.
Bolsa Chica is a quite extensive wetland and saltmarsh. Access is easy once you get there. It is immediately inland of the Pacific Coast Highway at Sunset Beach, Orange County.
I arrived at the top end of the reserve at Sunset Beach. The bus stop is right by the beach and some Heerman’s Gulls were showing well. I took a few moments on the beach, scanning just beyond the surf line and seeing thousands of dark ducks which proved to be Surf Scoters with a few Brown Pelicans scattered amongst them.
A small roost of gulls held Californian and Ring-billed Gulls.
The tide had reached it’s peak a couple of hours previously and was just starting to expose mud as it ebbed from the reserve. Birds were starting to feed. Most obvious were the dowitchers. Trying to choose between long and short-billed versions has always been tricky. Today I was close enough to hear the occasional sound from them. Long-billed Dowitchers chatter to each other while feeding. It was the absence of this that gave me their identity as Short-billed Dowitcher. I was very lucky to be able to get so close and luckier still as other birds joined them. Western Sandpipers and Dunlin fed on the very edge while Marbled Godwits and Willets were able to wade a little deeper. A Double-crested Cormorant was huddled in the saltmarsh vegetation. On the deeper water, Lesser Scaup, Bufflehead and Eared Grebe dived to feed. It was clear enough to be able to watch the grebe under water.
At the southern end of the first body of water, a sluice gate empties from a relief channel. This channel passes through the reserve draining it and annexing a freshwater area to the north. A Ring-billed Gull was posing nicely.
I chose to walk up the Northern bank of the channel to explore the freshwater area. Here were ducks; Green-winged Teal, Blue-winged Teal, Northern Pintail, American Wigeon and Mallard. A Harrier sat out on the marsh. On the bank below me I had my best ever view of a Western Meadowlark. The river behind me was full of Ruddy duck with some American Coots. In the river side vegetation, Belding’s Sparrows scuttled about like little mice.
Some locals who looked as if they should know, were admiring a Western Grebe, but I preferred to go for Clarke’s Grebe. The lighter mottled sides, the brighter bill and lightness around the eye suggested I should.
I set up a shot waiting for the Harrier to fly, but was distracted at the vital moment by a mad woman. I usually resent people talking to me for no reason and today was no exception, but the people around here are keen to interrupt. A more generous blogger might observe how friendly people are. There certainly are a lot of them on a Sunday. Runners thundered along the board-walk shaking my camera. I wonder if that is why they are called joggers?
I returned to the sluice gate and walked up the other bank which put me into the salty area again.
One of the birds that I had hoped to see today was the Reddish Egret, and I was very pleased to see one although quite distant. It was dancing around like a drunken aunt kissing children at a wedding. The Reddish Egret is surely one of the most fascinating birds to watch and I took a while to enjoy it. The picture was taken later on at a closer approach. Unfortuneately, it seemed to have run out of steam by then.
The sun had reached it’s highest point by now and was at my right shoulder giving beautiful views of Long-billed Curlew, Grey Plover and a fishing Forster’s Tern to my left.The Western Sandpipers thronged the mud in their many hundreds. I had hoped to find a few Least Sandpipers Amongst them and had been combing the flocks for a more conspicuously marked pelage and yellowy legs. At last I found one and then two, three, four. From that moment on it seemed that all the tiny peeps were least. Beyond them I noticed a Little Ringed Plover and had to correct myself to a fellow birder. It was of course a Semi-palmated Plover.
I had nearly reached the short board-walk and was taking in some of the changes since my last visit. A lot of earthworks have been carried out and the inland water bodies have been linked to the ocean. View points have been furnished with benches for tired soldiers.
A gull roost on a nearby island held Western, Ring-billed and Californian gulls. Also on the island were Sanderling, Ruddy Turnstone and more Grey Plovers. One of the plovers had found something to eat which was drooping from his short bill. Just for a second, I thought it was a Curlew Sandpiper.
At a rough guess, I could probably see about 20 species from where I was sitting; gulls, waders, ducks, cormorants and a Peregrine Falcon way off. It was hard to tear myself away, but I wanted to visit the board-walk by the car park. Here there were 5 Redhead among the scaup. Some Northern Shoveler put in their first appearance of the day and a Red-breasted Merganser came close enough to show off her teeth.
It was time to start heading home and I retraced my steps to the relief channel. More Least Sandpiper were joined by an American Avocet in the shallows. I turned inland with an idea to look up some burrowing owls that the mad woman had mentioned. A Green Heron sat well for me as I walked east, but joggers disturbed this American Kestrel immediately after the picture. Sadly, when I reached the described spot, some owl botherers had skipped the fence into the protected area and were creeping about very close to the burrow.
A close look at a Peregrine made up for missing the owls and two local ladies, Zorissa and Sammy, shared the sight. On a bank beneath the falcon, California Towhees and White-crowned Sparrows appeared not to have seen it.
The light was fading now on what had been a very productive day. The light had been good and the mercury had reached an un-seasonal 25C. It was a stiff walk back to Sunset Beach where I saw the tail-lights of the bus heading north up PCH.
It would be feasible to make this trip from Long Beach, but I would not recommend it to my colleagues staying in Redondo Beach, as I was on this occasion.
The 232 bus leaves from Beryl and PCH, just by Whole Foods Supermarket. Change at Long Beach Transit Mall, on 1st and Pine, to bus 91, 92, 93 or 94 towards 7th and Channel. Change again at the Veterans Hospital, taking the 1 to Sunset beach.
On Sunday most buses only go once an hour. The reserve is busy too with cyclists, joggers and families. On weekdays as I recall, the reserve is much quieter and the buses are more frequent.

Bird Species; 61

Eared Grebe 6, Clarke’s Grebe 3, Pied-billed Grebe 3, Brown Pelican 18, Double-crested Cormorant 80, Great Blue Heron 5, Great Egret 8, Snowy Egret 15, Reddish Egret 2, Green Heron 1, Canada Goose 40, Mallard 12, Northern Pintail 25, American Wigeon 25, Northern Shoveler 6, Blue-winged Teal 5, Green-winged Teal 15, Redhead 5, Lesser Scaup 100, Surf Scoter 1000, Bufflehead 120, Red-breasted Merganser 3, Ruddy Duck 100, Turkey Vulture 2, Red-tailed Hawk 2, Northern Harrier 3, American Kestrel 3, Peregrine Falcon 2, American Coot 60, Black-bellied Plover 12, Semi-palmated Plover 1, Kildeer 150, American Avocet 30, Greater Yellowlegs 4, Willet 200, Whimbrel 2, Long-billed Curlew 10, Marbled Godwit 35, Ruddy Turnstone 2, Sanderling 6, Dunlin 8, Western Sandpiper 1500, Least Sandpiper 200, Short-billed Dowitcher 1000, Ring-billed Gull 12, California Gull 40, Western Gull 60, Heerman’s Gull 20, Royal Tern 2, Forster’s Tern 8, Mourning Dove 12, Anna’s Hummingbird 1, Belted Kingfisher 2, Black Phoebe 5, Say’s Phoebe 3, American Crow 20, California Towhee 2, Savannah Sparrow 15, White-crowned Sparrow 8, Housefinch 40, Western Meadowlark 8.