Skip to content

Free email delivery

Please sign up for email delivery in the subscription area to the right.
No salesman will call, at least not from us. Maybe from someone else.

Cundinamarca Antpitta, Peter Kaestner & the ABC

March 12, 2024

[Posted by Chuck Almdale]

Cundinamarca Antpitta or Grallaria kaestneri

They’re still finding new species of birds in the least-explored hinterlands of the world. Many of them are splits – former subspecies raised to full species status on the basis of someone’s research – but some are just plain new to science. The Cundinamarca Antpitta for example, known to the scientific world as Grallaria kaestneri. The species name kaestneri is for Peter Kaestner, the discoverer. On 16 October 1989 Kaestner was poking about in the highland cloud forest of Colombia (doesn’t everyone?) when he heard the bird sing, recognized that he did not recognize the song (yes, he’s that experienced), taped it, played it back, the bird came in to confront the [apparent] bird invading his territory, and Peter saw that it was not a bird known to science (yes, he’s that good).

On 25 May 2023, 33 years after his discovery, Peter – now retired from the diplomatic service – took time off from his avocation of seeing more species of birds in the world than anyone and returned for another look at Grallaria kaestneri, his namesake. The short film below documents that meeting.

He soon returned to his avocation. Nine months later, in February 2024, he spotted an Orange-tufted Spiderhunter, a species in the Sunbird family Nectariniidae, on the southern Philippines island of Mindanao and thereby became the first person in the world to see 10,000 different species of birds. (Yes, he’s that good.)

Orange-tufted Spiderhunter. Photo by Kevin Pierce, eBird. The tufts are on the flanks.

Peter has recently taken on the role of fund-raising for the American Bird Conservancy, whose mission is to protect bird life throughout the New World, and he, his Grallaria kaestneri and the ABC want to send everyone a book in return (of course) for a donation.

If you’re interested in learning what they have to say, go here. It’s a good organization.

Zoom Recording: Coevolving Cowbirds and Hosts, with Dr. Pablo Weaver

March 7, 2024

The recording of this program from 5 Mar 2024 is now available online

Could that be a Wooden Cowbird pestering the bluebird?
(photo courtesy of Pablo Weaver)

Coevolving Cowbirds and Hosts, with Dr. Pablo Weaver

Recording Glitch: There are two programs recorded here. The first (18 seconds long) is useless; click the forward button >| at lower left of screen to go past it. When the second recording appear, click the usual run button at lower left.

Co-evolving Cowbirds and their Hosts, with Dr. Pablo Weaver

Brood parasites, often vilified as “cheats” have fascinated naturalists since ancient times and inspired the likes of Darwin and Shakespeare with their unique reproductive strategy. In the case of obligate brood parasitism, a species’ entire survival relies on the parental care of another, unsuspecting host species. Brood parasitic relationships have evolved in several animal groups exhibiting parental care, including insects, fish, and birds, with the latter providing fascinating case studies of the complex evolutionary arms race occurring between parasites and their hosts. As parasites adapt to camouflage their eggs and young within host nests, the hosts exhibit remarkable counter adaptations, including egg recognition and counting, that protect their own reproductive efforts from the nest invaders. Dr. Weaver will discuss this fascinating system and present case studies from his own research involving the coevolution of cowbirds and their hosts in the Dominican Republic and Montana.

A pendulating Village Weaver at his nest. (photo courtesy of Pablo Weaver)

Dr. Pablo Weaver is an Associate Professor of Biology at the University of La Verne & the Director of the Neher Montana Research Station. His broad interests include biogeography, ecology, and evolutionary biology. He has several active areas of research, including work with birds and freshwater fishes in both the West Indies and in Montana. His research in the West Indies deals with fundamental questions of biogeography and evolution on islands and how the processes of natural and sexual selection shape diversity. In Montana, he studies the effects of mining and heavy metal contamination on aquatic communities, as well as interactions between parasitic cowbirds and Mountain Bluebirds.

Dr. Pablo Weaver

Bald Eagles at Big Bear Lake | WebCam

March 3, 2024

[Posted by Chuck Almdale]

Jackie & Shadow are back. Or, more accurately, still there.

Early morning 3 Mar 2024, 03:38am (I think). Jackie stands up for a moment, revealing two eggs. Right egg appears to be pipped.
Closeup of the eggs, a bit fuzzy.

Link to the web-cam: https://www.youtube.com/watch?v=B4-L2nfGcuE
There’s a lot of interesting information on the website, supplied by the Friends of Big Bear Valley who operate the web cam site.
It looks cold and sounds windy. Brrrrrrrrrr.

Here’s another snip.

Date: 3 Mar 2024 13:38pm. Three eggs, no visible pips.

Driftwooded beach at Malibu Lagoon, 25 Feb. 2024

February 29, 2024

[Text by Chuck Almdale; photos by Ray Juncosa, Larry Loeher & Grace Murayama]

Looking east towards the lagoon opening (Ray Juncosa 2-25-24)

Partly cloudy, as you can see, temperatures mostly in the high 50s with a slight breeze. The sea was about as flat as it can get; only four people in the water, vainly waiting for a wave. Waveless winter days means a depopulated beach. The lagoon channel to the sea had moved well to the east, next to Adamson House; the wide rushing icy cold stream kept beachwalkers from wandering westward from the pier.

Near our meeting spot under the metal pavilion – I can’t come up with a better name – a few ducks and coots paddled around the channels and a miscellany of sandpipers were on the sand. Several Killdeer were screaming bloody murder for reasons known only to themselves. The cormorant-of-the-day, pictured below, assigned snag duty, looked quite frosted, from what I don’t know. Perhaps the cold lagoon water.

Frosty-looking Double Crested Cormorant (Ray Juncosa 2-25-24)

Some of the cormorants have developed their bushy white eyebrow-crests of breeding, but not the one above. If you look closely at the Great Blue Heron below, you can see his (or her) chestnut shoulder-patch and chestnut legs.

Great Blue Heron appears ready to considering mating (Ray Juncosa 2-25-24)

Canada Geese have nested at the lagoon for at least the past three years. They appreciate the brushy sand islands, as people never wade out to them. There were nine in the lagoon and channels, checking everything out.

Canada Geese, probably looking to nest again at the lagoon (Ray Juncosa 2-25-24)

The Lesser Goldfinches were numerous and noisy, feeding on seed heads. This male has developed his black cap.

Lesser Goldfinch male (Ray Juncosa 2-25-24)

Looking west from the path to the beach, just north of Malibu Colony, as in the photo below, you can see the red roofs and white stone bell tower of Pepperdine University at the far left.

South channel looking west (Ray Juncosa 2-25-24)

We had a lot of Brown Pelicans in all stages of plumage. Photographer Ray Juncosa became fascinated by their landing, flapping and bill-poking. Most of them were offshore just past the surf-(less) zone, but about 60 were in the lagoon, the channels, and on the low rocks after the water level dropped towards the 4pm low tide.

Brown Pelican dropping in (Ray Juncosa 2-25-24)
Brown Pelican, still dropping (Ray Juncosa 2-25-24)
Brown Pelican, getting closer (Ray Juncosa 2-25-24)
Brown Pelican group (Ray Juncosa 2-25-24)
Brown Pelican group (Ray Juncosa 2-25-24)
Brown Pelican group (Ray Juncosa 2-25-24)

The brown ones are the immatures. The adults get colorful creamy-yellow and brown heads and necks, red gular pouches and silvery backs.

When waves aren’t crashing over them, the outer rocks often have cormorants, a seal and the occasional Black Oystercatcher. This is the best place to find either Brandt’s or Pelagic Cormorants. These two species hate to venture inland, and crossing the beach all the way to the lagoon is simply too far for them to chance the journey. If you don’t see them on the rocks, they may be in the water somewhere in the vicinity of the surf zone, paddling around, diving for fish.

Outer rock cormorants: Brandt’s and two Pelagics (Ray Juncosa 2-25-24)
West end of the beach (Grace Murayama 2-29-24)

The beach from lagoon-edge to shore, from the colony to lagoon outlet, was covered with driftwood, shells – mostly mussel – and seaweed. I can’t recall ever seeing so much flotsam and jetsam on this portion of the beach.

Driftwood, middle beach, lagoon & Malibu Pier in background (Larry Loeher 2-29-24)

Towards the lagoon edge and among the chunks of wood were 21 roosting Snowy Plovers, out of the breeze and nearly out of sight. Among them were scattered a few Sanderlings, a common roost-mate of Snowy Plovers.

Driftwood, middle beach. The east shore now has no driftwood at all (Larry Loeher 2-29-24)

We’d seen 18 Snowies in October, only one in November, and none at all in December and January. They’d probably been on the east shore, hiding within the driftwood piled up on the east side until the recent storm shifted everything around.

Western Grebe, oiled (Grace Murayama 2-29-24)

Malibu Lagoon on eBird as of 3-01-24: 7530 lists, 319 species
Most recent species added: Red-breasted Nuthatch (31 October 2023, Kyle Te Poel).

Many, many thanks to photographers: Ray Juncosa, Larry Loeher & Grace Murayama

Upcoming SMBAS scheduled field trips; no reservations or covid card necessary unless specifically mentioned:

  • Sepulveda Basin Sat Mar 9, 8:00 am.
  • Malibu Lagoon, Sun. Mar 24, 8:30 (adults) & 10 am (parents & kids)
  • Sycamore Canyon Sat. Apr 6, 8:00 am
  • These and any other trips we announce for the foreseeable future will depend upon expected status of the Covid/flu/etc. pandemic at trip time. Any trip announced may be canceled shortly before trip date if it seems necessary. By now any other comments should be superfluous.
  • Link to Programs & Field Trip schedule.

The next SMBAS Zoom program: “Coevolving Cowbirds and Their Hosts” with Dr. Pablo Weaver, Evening Meeting, Tuesday, Mar 5, 2023, 7:30 p.m.

The SMBAS 10 a.m. Parent’s & Kids Birdwalk is again running. Reservations not necessary for families, but for groups (scouts, etc.), call Jean (213-522-0062).

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

Prior checklists:
2023: Jan-June, July-Dec
2021: Jan-JulyJuly-Dec2022: Jan-June, July-Dec
2020: Jan-JulyJuly-Dec  2019: Jan-June, July-Dec  
2018: Jan-June, July-Dec  2017: Jan-June, July-Dec
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 10-year comparison summaries created during the Lagoon Reconfiguration Project period, remain available—despite numerous complaints—on our Lagoon Project Bird Census Page. Very briefly summarized, the results unexpectedly indicate that avian species diversification and numbers improved slightly during the restoration period June’12-June’14.

Many thanks to Marie Barnidge-McIntyre, Femi Faminu, Lillian Johnson and others for their contributions to this month’s checklist.

The species lists below is irregularly re-sequenced to agree with the California Bird Records Committee Official California Checklist. If part of the right side of the chart below is hidden, there’s a slider button inconveniently located at the bottom of the list. The numbers 1-9 left of the species names are keyed to the nine categories of birds at the bottom.
[Chuck Almdale]

Malibu Census 2023-249/2410/2211/2612/241/282/25
Temperature56-7462-7062-6853-6453-6451-62
Tide Lo/Hi HeightH+3.77L+3.34H+6.53H+6.20H+5.06H+5.06
 Tide Time073910290740064410080921
1Canada Goose   2189
1Cinnamon Teal  313 
1Northern Shoveler 1 1310 
1Gadwall402330275440
1American Wigeon  514  
1Mallard12 98735
1Green-winged Teal1 3181725
1Lesser Scaup  1   
1Surf Scoter 1583432
1Bufflehead  51812 
1Red-breasted Merganser  20542
1Ruddy Duck 122237301
2Pied-billed Grebe14622 
2Horned Grebe   1  
2Eared Grebe   11 
2Western Grebe 28131814240
7Feral Pigeon434444
7Eurasian Collared-Dove     1
7Mourning Dove51   4
8Anna’s Hummingbird22 2 1
8Allen’s Hummingbird141355
2Sora1     
2American Coot4915723028014846
5Black Oystercatcher   1  
5Black-bellied Plover82797524542
5Killdeer615201812
5Semipalmated Plover3     
5Snowy Plover22181  21
5Whimbrel32234846
5Long-billed Curlew3     
5Marbled Godwit4845511520
5Short-billed Dowitcher2     
5Spotted Sandpiper3     
5Willet29561222315
5Ruddy Turnstone41011052
5Sanderling32276910710
5Least Sandpiper18635281620
5Western Sandpiper15    8
6Bonaparte’s Gull   3  
6Heermann’s Gull515571221260
6Ring-billed Gull 4423425200
6Western Gull654568643085
6Herring Gull  112 
7Lesser Black-backed Gull   1  
6California Gull77220425270400
6Glaucous-winged Gull  1533
6Forster’s Tern1     
6Elegant Tern2421   
6Royal Tern451273 
2Red-throated Loon     1
2Pacific Loon  1 11
2Common Loon 1    
2Black-vented Shearwater2028    
2Brandt’s Cormorant  1  1
2Pelagic Cormorant12 514
2Double-crested Cormorant304837471828
2Brown Pelican2712267226300
3Black-crowned Night-Heron2  11 
3Snowy Egret52201876
3Green Heron31    
3Great Egret 642  
3Great Blue Heron324213
4Turkey Vulture 122  
4Osprey11211 
4Red-shouldered Hawk1  1  
4Red-tailed Hawk12  1 
8Belted Kingfisher21 112
8Downy Woodpecker   1  
8Nuttall’s Woodpecker1  1  
8Hairy Woodpecker   1  
8Northern Flicker (Red-shafted) 1    
4American Kestrel1     
4Peregrine Falcon  1   
8Nanday Parakeet 2    
9Black Phoebe442414
9Say’s Phoebe  1   
9Cassin’s Kingbird     1
9California Scrub-Jay2  122
9American Crow644351010
9Common Raven2  1  
9Oak Titmouse31 1  
9Northern Rough-winged Swallow2     
9Barn Swallow4     
9Bushtit82250 1212
9Wrentit414312
9Ruby-crowned Kinglet  1   
9Blue-gray Gnatcatcher  2  1
9House Wren2232 1
9Marsh Wren  1   
9Bewick’s Wren1 1   
9European Starling15122228219
9Hermit Thrush    1 
9House Finch65691212
9Lesser Goldfinch  2 620
9Dark-eyed Junco   2  
9White-crowned Sparrow 1020271512
9Savannah Sparrow1     
9Song Sparrow55671010
9California Towhee312112
9Red-winged Blackbird715 16235
9Great-tailed Grackle120 1 1
9Orange-crowned Warbler12  22
9Common Yellowthroat248552
9Yellow-rumped Warbler (Audubon’s) 5126610
9Townsend’s Warbler 1    
9Wilson’s Warbler1     
9Western Tanager1     
9Black-headed Grosbeak1     
Totals by TypeSepOctNovDecJanFeb
1Waterfowl5351134155149144
2Water Birds – Other129280314426211621
3Herons, Egrets & Ibis1311282399
4Quail & Raptors445420
5Shorebirds299265139162103156
6Gulls & Terns152118416562345748
7Doves944449
8Other Non-Passerines6101968
9Passerines8215414611988158
 Totals Birds747897118714649171853
        
 Total SpeciesSepOctNovDecJanFeb
1Waterfowl341011107
2Water Birds – Other787888
3Herons, Egrets & Ibis443432
4Quail & Raptors433320
5Shorebirds14999810
6Gulls & Terns668975
7Doves221113
8Other Non-Passerines451623
9Passerines231718171619
Totals Species – 108675860685757

Tom Gauld on the journey to a magma chamber | New Scientist

February 27, 2024

[Posted by Chuck Almdale, submitted by Anon]

More cartoons by Tom Gauld here.

If you subscribe to New Scientist, you can read the whole story below. Otherwise it seems to peter out after a few interesting paragraphs.

World’s first tunnel to a magma chamber could unleash unlimited energy
New Scientist | Graham Lawton | 3 Jan 2023

Lead paragraph:

ICELAND is one of the most boring countries in the world. That is meant as a compliment, not an insult. The island nation is dotted with thousands of boreholes drilled deep into the rock to extract geothermal energy. They will soon be joined by another, which will be anything but boring. “We are going to drill into a magma chamber,” says Hjalti Páll Ingólfsson at the Geothermal Research Cluster (GEORG) in Reykjavík. “It’s the first journey to the centre of the Earth,” says his colleague Björn Þór Guðmundsson.