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More Birds, Fewer Mullet: Malibu Lagoon, 23 September, 2018

September 27, 2018
Seafood lovers alert! A mortified Sea Hare on the beach. It tastes just like Land Hare, or so I am told. (G. Murayama 9-21-18)

We didn’t have any shocks (later for the surprise) like last month when the lagoon and channel were covered with dead Striped Mullet. Somewhere between 3000 and 6000 dead fish were removed by lucky State Parks personnel during the final week of August. I for one was stunned that the lagoon held that many fish. More fish were removed during the past week (I assume) as on Sep. 15 I counted 289 dead mullet along the northwest lagoon/channel shoreline, and well under 100 today in the same area. Some research results point towards low dissolved oxygen (DO) in the water as the mortality culprit. This could interrelate with water temperature; as water temperature goes up, DO goes down.

View across west channel towards Malibu Colony shows very few dead mullet.
Compare to last month. (L. Johnson 9-23-18)

Migrants are definitely returning. Very few birds are on or in the water of the lagoon or channel. The Red-necked Phalaropes, many twirling close to shore, were one of the few exceptions. Their twirling creates a vortex which brings edibles up the the surface where the birds can snap them up with their needle-like bills.

Red-necked Phalarope (G. Murayama 9-21-18)

Coot numbers are growing and they are busily paddling around the lagoon.

Coots have lobed toes, not webbed feet. Convergent evolution strikes again!
(G. Murayama 9-08-18)

Coots are common all across America and birders tend to ignore them. Non-birders usually assume coots are some sort of duck as they’re often out swimming with the ducks, but they’re actually far more closely related to cranes. This relationship is not obvious: Whooping Cranes, for example, are 52″ long, whereas the Coot is 15.5″ long. Unlike the wide duck bill, the coot bill is laterally compressed. Most interesting (to me) is their feet. Ducks have wide fully-webbed feet, great for swimming, lousy for walking. Coots have lobed toes, one lobe for every toe-bone. The lobes make them good swimmers – although probably a bit less efficient than ducks – and the lack of webbing allows them to easily walk on land. We often see flocks of them grazing across park lawns. This difference points to the separate evolutionary paths of ducks and coots. They now share their aquatic habitat, but natural selection solved their problems of efficiently swimming in different manners. In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.

If my explanation of convergent evolution doesn’t work for you, watch this video from the “It’s OK to be Smart” PBS people.
https://youtu.be/fHs_lniTNvI

There, that ought to hold you for a while.

Brown Pelican trio (R. Juncosa 9-23-18)

Black-bellied Plover and Whimbrel numbers are down, but all the other shorebird, pelican, cormorant and gull numbers were up. The terns, save for one lonely Caspian, must have been off feeding somewhere out on the sea.

Caspian Tern, resting Black-bellied Plovers, and stone (R. Juncosa 9-23-18)

The Osprey was seen in the early morning in the large Aracaria evergreen tree on the Adamson House property. We’ve often seen them there in the past, concealed among the large shady branches.

Sanderling emerges from a mussel shell. Perhaps aging Gooseneck Clams really do become Barnacle Geese, as once believed. (G. Murayama 9-21-18)
Plover sign on the virtual fence (D. Roberts 9-20-18)

Snowy Plover numbers continue to grow. We had 41 birds, including banded bird gg:pg (left: green over green, right pink over green). This bird was banded this summer at Oceano Dunes SVRA, near Pismo Beach on the central California coast. They were all resting together outside the east end of the virtual fence. The surf had eaten away the sand right up to the fencepoles, and it was moved inland on Sep. 20 about 3 pm. Now the beachwalkers don’t have to walk within the exclosure in order to stay out of the waves. I wonder how long this will last, as high surf, notorious for eating beaches, is heading north from the Baja hurricane.

Snowy Plover gg:pg, born Summer 2018 at Oceano Dunes.
(G. Murayama 9-21-18)

Passerines were definitely passing through. Seventy-five Bushtits was an all-time lagoon high. Our common wintering warbler, the Yellow-rumped, has not arrived, but still we had four species of warbler.

Bushtit in – of all places – the bushes (G. Murayama 9-14-18)

Of greatest surprise among the passerines was a single MacGillivray’s Warbler, seen along the border fence between Adamson House and the easternmost section of lagoon, skulking low in the brush near the tree overhanging the lagoon. I (alone, unfortunately) watched it for several minutes before it disappeared into the brush to the west, below the palms south of the boathouse. This is the first new species for our 4th Sunday lagoon birdwalks since the White Pelicans showed up in October, 2017. We unfortunately can’t count the Magnificent Frigatebird from Aug. 10, 2018, as it was not there during our bird walk. The lagoon has hosted dozens of species whose visits fell outside our census dates. As of 10-1-18, eBird shows a total of 305 species reported for the lagoon, of which I have reported 236, or 77%.

Great Blue Heron, still heavily colored on shoulder (R. Juncosa 9-23-18)

Birds new for the season were: Eared Grebe, Anna’s Hummingbird, Western Sandpiper, Short-billed Dowitcher, Green Heron, Osprey, Cooper’s Hawk, Say’s Phoebe, Warbling Vireo, California Scrub-Jay, House Wren, Blue-gray Gnatcatcher, Savannah Sparrow, Dark-eyed Junco, Western Meadowlark, Orange-crowned, MacGillivray’s & Yellow Warbler, Common Yellowthroat. Anna’s Hummingbird and California Scrub-Jay are always around somewhere, but sometimes we just miss them.

Many thanks to our photographers: Lillian Johnson, Ray Juncosa, Larry Loeher, Grace Murayama, & Diana Roberts.

Juvenile Black-crowned Night-Heron (R. Juncosa 9-23-18)

Our next three scheduled field trips: Huntington Beach Central Park, 8am, 13 October; Butterbredt Springs Fall Campout 8:30am, 27-28 October;  Malibu Lagoon 8:30 & 10am, 28 October.

Our next program: Luke Tiller will present “Tails from the Platform: Hawks, Hawkwatchers and Hawkwatching”: Tuesday, 2 October, 7:30 p.m., Chris Reed Park, 1133 7th St., NE corner of 7th and Wilshire Blvd. in Santa Monica.

NOTE: Our 10 a.m. Parent’s & Kids Birdwalk meets at the shaded viewpoint just south of the parking area. Watch for Willie the Weasel. He’ll be watching for you and your big floppy feet.

Links: Unusual birds at Malibu Lagoon
9/23/02 Aerial photo of Malibu Lagoon

Prior checklists:
2017: Jan-June, July-Dec 2018: Jan-June
2016: Jan-June, July-Dec 2015: Jan-May, July-Dec
2014: Jan-July, July-Dec 2013: Jan-June, July-Dec
2012: Jan-June, July -Dec 2011: Jan-June, July-Dec
2010: Jan-June, July-Dec 2009: Jan-June, July-Dec.

The rope & pole “virtual fence” was moved. It had been where the beach berm is now. (L. Johnson 9-23-18)

The 10-year comparison summaries created during the project period, despite numerous complaints, remain available on our Lagoon Project Bird Census Page. Very briefly summarized, the results unexpectedly indicate that avian species diversification and numbers improved slightly during the period Jun’12-June’14.

Many thanks to Lillian Johnson, Chris Lord, Clyde Singleton and Chris Tosdevin for their contributions to the checklist below.  [Chuck Almdale]

Malibu Census 20184/225/276/247/228/269/23
Temperature63-6761-6662-6870-7972-7663-70
Tide Lo/Hi HeightL-.15H+3.86H+3.50H+3.31H+4.36L+4.72
Tide Time102809120826073310300923
Gadwall512415
Mallard415121262
Pied-billed Grebe2
Eared Grebe4
Rock Pigeon13263047
Eurasian Collard-Dove2
Mourning Dove1224
Anna’s Hummingbird112
Allen’s Hummingbird3124
American Coot241127
Black-necked Stilt1
Black-bellied Plover911712595
Snowy Plover93493341
Semipalmated Plover4
Killdeer748848
Whimbrel3631133915
Marbled Godwit30314
Ruddy Turnstone64
Sanderling457315
Least Sandpiper12
Western Sandpiper49
Short-billed Dowitcher1
Willet6418223
Red-necked Phalarope19
Bonaparte’s Gull2
Heermann’s Gull1528811
Ring-billed Gull1
Western Gull1811275958581
California Gull42443
Least Tern92
Caspian Tern81141151
Forster’s Tern23
Royal Tern216
Elegant Tern3013041148
Brandt’s Cormorant17
Dble-crest Cormorant18157161522
Pelagic Cormorant11
Brown Pelican326855735
Great Blue Heron112333
Great Egret33343
Snowy Egret14510259
Green Heron11
Black-crowned Night-Heron211
Turkey Vulture459
Osprey1
Cooper’s Hawk1
Red-tailed Hawk1
Peregrine Falcon1
Black Phoebe12332
Say’s Phoebe2
Warbling Vireo1
California Scrub-Jay1
American Crow224428
Violet-green Swallow2
Rough-wnged Swallow514
Cliff Swallow813
Barn Swallow4101525161
Bushtit12027603075
House Wren1
Bewick’s Wren14
Blue-gray Gnatcatcher3
Western Bluebird1
American Robin1
Northern Mockingbird22222
European Starling1335
House Finch458611
Spotted Towhee2
California Towhee1216
Savannah Sparrow12
Song Sparrow1055269
Dark-eyed Junco2
Western Meadowlark2
Hooded Oriole4
Red-winged Blackbird173025
Brown-head Cowbird22
Brewer’s Blackbird1
Great-tailed Grackle443476
Orange-crowned Warbler13
MacGillivray’s Warbler1
Common Yellowthroat16
Yellow Warbler2
Totals by TypeAprMayJunJulAugSep
Waterfowl927162762
Water Birds – Other528821222489
Herons, Egrets & Ibis4910173217
Quail & Raptors0510511
Shorebirds905641149215234
Gulls & Terns5726995137169136
Doves34483051
Other Non-Passerines311126
Passerines37666916175210
Totals Birds255525258522558756
Total SpeciesAprMayJunJulAugSep
Waterfowl222211
Water Birds – Other344345
Herons, Egrets & Ibis343435
Quail & Raptors021013
Shorebirds8665911
Gulls & Terns487574
Doves222212
Other Non-Passerines111112
Passerines15121115924
Totals Species – 80384137373657

Why Do Tumbleweeds Tumble? | Deep Look Video

September 25, 2018
by

The silent star of classic Westerns is a plant on a mission. It starts out green and full of life. It even grows flowers. But to reproduce effectively it needs to turn into a rolling brown skeleton.

This is another installment of the PBS Deep Look series; this installment is adapted from the “It’s OK to be Smart” series. If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.   [Chuck Almdale]

Lagoon Cleanup – Int’l Coastal Cleanup Day 9-15-18

September 24, 2018

This was a Good Cleanup Day at the lagoon.

On the beach, with bags (L. Loeher 9-15-18)

168 people showed up, signed in and spread out from beach to lagoon and up the creek. True, total pre-sign-ups were a bit over 300, but this is slightly better than last year, when 300 signed up and 157 showed up. Eleven SMBAS worker bees appeared, setting up tables & shade awning, greeting, taking signed waivers, giving safety talks, handing out bags and gloves, then weighing-in the returning trash and giving water to thirsty picker-uppers.

Lu makes signs (L. Loeher 9-15-18)

Our bonus helper, Flo, brought Judge Ken, who ruled impartially on whether waivers had been properly filled out or not. Ken recently thrashed his knee and was definitely hobbling, but once he was in the chair and behind the bench he seemed right at home.

Structuring the shade tent (L. Loeher 9-15-18)

The weather was perfect, at least for worker bees. It was a bit warmer for picker-uppers and if you wore glasses, they were soon enough sliding down your sweaty nose when you stooped to pick up some minuscule mote of colored plastic.

Mary discovers a banana among the waivers (L. Loeher 9-15-18)

Among the volunteers were a group of adorable tiny girl scouts, and teacher Dean returned yet again with his dozens of Humanitas students and a large box of doughnuts. Only a few students needed to have their community service hours signed off – it was mostly lots of cheerful people who contributed some of their Saturday to help the lagoon and beach.

Quien Sabe? (L. Loeher 9-15-18)

Every year we refine the the day just a bit more….next year we’ll bring one less table and definitely less water (those gallon jugs weigh 8 1/2 pounds each and 24 of them were far too many). Then again, the day may be extremely hot – aaaah, who knows what the weather is going to do anymore, anyway?

An L.A. County fire helicopter is really gettin’ down; I wouldn’t want to be on that rooftop patio just then. (L. Loeher 9-15-18)

No one said much about the stinky dead fish. Chuck A. counted 289 dead Striped Mullet along the lagoon & channel shoreline from the topographical water feature by the traffic circle over to the west end of the Pacific Coast Highway bridge, perhaps 2/10ths of a mile of shoreline.

Meanwhile, down on the lagoon edge, a Great Blue Heron picks off an unwary Eared Grebe. (L. Loeher 9-15-18)

In her safety talks, Jean added “do not pick up any dead fish.” Larry – after spending the morning shooing people out of the fenced-in Snowy Plover exclusion zone – suggested placing two people there, as it’s a long, narrow area.

24″ Bolt cutter found on Coastal Cleanup Day at Malibu Lagoon
(L. Plauzoles 9-15-18)

Bolt cutters can cut lots of things: locks of all types, chains, steel cable used for pathway barriers, cables on commercial electric bikes and scooters – they’ll even cut bolts. We found this bolt cutter hiding in the brush between path and channel, about 10-20 yards east of the pavilion meeting area, no doubt a handy location for whomever was using it. We found the cut bicycle lock another 30 yards east between the pathway and the parking lot. About half of the pathside cable between the pavilion and the PCH bridge lookout point is missing – maybe 100 yards. The scooter was in the brush about 5 yards south of the PCH bridge and 3 yards west of the lagoon, very close to an encampment under the bridge consisting of sleeping material and litter.

Two things bolt cutters can cut: pathway border cables, bicycle locks
(Muramaya, Plauzoles, 9-15-18)

A free-ridin’ Lime-S electric scooter was in the brush near the PCH Bridge (L. Loeher 9-15-18)

Some of the more unusual finds at the lagoon:

  • Bolt cutters about 10 lbs. and 24″ long
  • Bicycle lock, cut by guess what? ↑↑↑
  • Lime-S Electric scooter, disabled so you could ride it without motor

Today, Angelenos showed just how much they care for their creeks and their beaches and their favorite parks. The updated totals for Los Angeles County are awesome:

  • 75 locations
  • 13,342 volunteers
  • 40,066 pounds of trash were picked up (ergo NOT going into the ocean!)

Other L.A. County odd items in odder numbers

  • 14 Lobster traps
  • 12 Drug related items
  • 11 Shopping carts
  • 3 Bottles with live mice (yes, they were safely released somewhere in Malibu!)
  • 3 Gold rings
  • 2 Chainsaws
  • 1 Buddha statue
  • 1 Set of Porsche keys
  • and a Vintage 1963 coca cola can

Made in the shade (L. Loeher 9-15-18)

Preliminary results for California, with 75% of sites reporting:

  • Volunteers: 53,073
  • Trash picked up: 698,931 pounds
  • Additional recyclable materials: 35,674 pounds
  • Total: 734,606 pounds or 367 tons
  • A Marin county volunteer found a painting of a marsh in a marsh

We’re still waiting to hear the U.S. and world totals – altogether an amazing worldwide endeavor. Humans are not only capable of great cooperative efforts but enjoy partaking in them, despite frequent indications to the contrary.

Look out next year – September 21st, 2019!

Worker Bees (L. Loeher 9-15-18)

[Ellen Vahan & Chuck Almdale]

 

Shape Shifting: and the Birds-of-Paradise | Cornell / National Geographic

September 20, 2018

Several kinds of birds-of-paradise transform their bodies into a dark oval shape when they display. Each species uses a different assortment of feathers on the wings, flank, or neck. They use muscles in the skin to move the feathers into position. The black shape serves as a background for showing off a bright patch of iridescent color to the females. The Cornell Lab’s Ed Scholes explains: . Filmed and photographed by Tim Laman.

There are currently seventy-two short films in the entire Birds-of-Paradise Project playlist, ranging from 26 seconds to 8:29. In the upcoming weeks, we will present some of our favorites.

A film from the Cornell Lab of Ornithology. If no film or link appears in this email, go to the blog to view it by clicking on the blog title above. If the film stops & starts in an annoying manner, press pause (lower left double bars ||) to let it buffer and get ahead of you.  [Chuck Almdale]

Flying Drones in Malibu is Illegal…

September 15, 2018
by

…and has been for a while.

Blue (Malibu residential) and green (State Parks) areas are the local drone no-fly zone. hivemapper.com

Most drone pilots probably know this. After all, illegal areas are discussed in the leading drone publications – Rotor Drone and Drone Magazine. They publish links to maps showing where drones are legal and where they are not. That’s how we found the map shown above.

Drone at Malibu Lagoon (SMBAS 8-31-18)

Link to the hivemapper.com map.

Drone at Malibu Lagoon (SMBAS Sep 7 2018)

But for the few drone pilots who don’t know, here’s a tip: they’re illegal in California State Parks. Anyone observing drones flying in any State Park should immediately call the State Parks dispatch operator (Sercom) at 951-443-2969.

They’re also illegal along the Malibu Coastline, between Pacific Coast Highway and the ocean, from:

  • Eastern end: Western edge of Topanga State Park, just west of Topanga Cyn. Blvd.

    Close-up of the east end of the (blue) drone no-fly zone.

  • Western end: Eastern edge of Leo Carillo State Park, just east of Mullholland Blvd.

    Close-up of the west end of the (blue) drone no-fly zone.

  • and well inland of PCH (see the first map)
  • and the state parks.

Here’s a map of the middle area, showing Malibu Lagoon and Surfrider Beach (all no-fly zones).

Close-up of the middle chunk of the (blue) drone no-fly zone.

The local movie stars and millionaires don’t want drone operators flying camera-carrying aircraft over their pools and patios any more than the rest of us, and they are undeniably pestered and snooped-at more than the rest of us. Fortunately for them, they were able to influence the passing of legislation making it illegal.

When a drone flies anywhere near the local roosting Snowy Plovers, they perceive the drone as a predator hawk or falcon and panic. [‘Roosting’ means resting or sleeping on the sand between high-tide feeding periods.] They’re trying to sleep. Imagine a lion walking into into your bedroom and staring down at you while you were trying to sleep in bed. You too might become alarmed, even panicked.

An SMBAS member who happened to witness the August 31 incident described it as follows:

Fastest flushing I’ve ever seen. The group flew, split up, some came back and landed for a few seconds, others flew over the ocean, carved figure 8’s over the surf zone, then split up, some flew to the east, some flew over the lagoon, some landed again inside the exclosure for a few seconds and then flew again.

Snowy Plovers disturbed by drone at Malibu Lagoon (SMBAS 8-31-18)

We’re posting this here because lately some drone pilots have been flying their drones within the residential area no-drone area of Malibu and simultaneously within the no-drone Malibu Lagoon State Park, and simultaneously illegally swooping it over the local population of state- and federally-listed threatened Snowy Plovers (one of only seven roosting colonies in Los Angeles County and one of only two breeding areas in Los Angeles County) and startling them into flight.

Snowy Plover resting in shade, Malibu Lagoon (L. Loeher 8-17-18)

This is not a good idea. You never know what some people are (or aren’t) thinking, but I know the State Parks people take a dim view of people startling this threatened species awake and spooking them into flight.

Anyone who sees a drone flying anywhere within the State Parks or the Malibu no-fly zone should immediately contact the local authorities. The State Parks dispatch operator (Sercom) is at 951-443-2969. We don’t know if the City of Malibu has a separate number for zones, but their non-emergency police/sheriff phone number is 310-456-6652 or 818-878-1808.

In fairness, State Parks needs to do more to let people know where drones are forbidden. As Malibu Lagoon and Surfrider beach are extremely popular – some two million people-visits per year – they could start right here and post prominent NO DRONES ALLOWED signs at the several beach entrances. The City of Malibu could post signs at their city borders.

Snowy Plover mother in nest with 2 eggs, Malibu Lagoon (G. Murayama 6-1-18

We now have Western Snowy Plovers at Malibu Lagoon year around. Breeding season runs from late March – early July, although locally it seems to begin in April. Winter roosting season is the entire rest of the year. At last count (Sep 8 2018) there were 35 Western Snowy Plovers roosting on the beach. We have had as many as 80 birds at a time, and – except for the few birds staying to nest – they all leave by the end of April.

Snowy Plover mated pair near their egg at Malibu Lagoon (G. Murayama 6-29-18)

They’re very small, they’re very hard to see due to their cryptic plumage which looks just like the sand they’re resting on, and they’re only about 2500 of them in the entire world (the population of Snowy Plovers which nest in the U.S. interior and winters on the Gulf and Mexican coasts, may be a separate species and are not included).

That’s why Western Snowy Plovers are state and federally listed as threatened and that’s why there is a fence around their nesting/roosting area. That’s why we’re posting this blog, and that’s why Santa Monica Bay Aububon Society really hopes that people will keep themselves, their children and their dogs outside the protective fence. Nearly everyone does so – there are always a few who don’t – and we have been very pleased that the beach-goers have been extremely cooperative to date. If you are concerned about our planet and the non-human animals who share it with you, please continue to show your concern right here, in your own neighborhood.

L.A. County Fire Dept. Helicopter flying extremely low over Malibu (SMBAS Sep. 8 2018)

And, while we’re on the subject of hovering vehicles, we don’t understand why the L.A. County Fire Dept. helicopter pilots feel they need to fly so close to the ground and ocean. Are they gawking at the girls? Volunteers on the beach observing the Snowy Plovers have long been advised: “You should note all helicopters flying below 600 ft. (~10x the height of the houses), note the description and tail number, photos are a plus.”

We hope they stop before they behead any paddleboarders. [Chuck Almdale]