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Cundinamarca Antpitta, Peter Kaestner & the ABC
[Posted by Chuck Almdale]

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.)

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.
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)
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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
[Posted by Chuck Almdale]
Jackie & Shadow are back. Or, more accurately, still there.


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.

Driftwooded beach at Malibu Lagoon, 25 Feb. 2024
[Text by Chuck Almdale; photos by Ray Juncosa, Larry Loeher & Grace Murayama]

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.

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.

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.

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

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.

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.






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.


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.

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.

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.

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).
Birds new for the season: Eurasian Collared-Dove, Mourning Dove, Snowy Plover, Western Sandpiper, Red-throated Loon, Brandt’s Cormorant, Cassin’s Kingbird, Blue-gray Gnatcatcher. “New for the season” means it has been three or more months since last recorded on our trips.
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-July, July-Dec 2022: Jan-June, July-Dec
2020: Jan-July, July-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 2023-24 | 9/24 | 10/22 | 11/26 | 12/24 | 1/28 | 2/25 | |
| Temperature | 56-74 | 62-70 | 62-68 | 53-64 | 53-64 | 51-62 | |
| Tide Lo/Hi Height | H+3.77 | L+3.34 | H+6.53 | H+6.20 | H+5.06 | H+5.06 | |
| Tide Time | 0739 | 1029 | 0740 | 0644 | 1008 | 0921 | |
| 1 | Canada Goose | 21 | 8 | 9 | |||
| 1 | Cinnamon Teal | 3 | 1 | 3 | |||
| 1 | Northern Shoveler | 1 | 13 | 10 | |||
| 1 | Gadwall | 40 | 23 | 30 | 27 | 54 | 40 |
| 1 | American Wigeon | 5 | 14 | ||||
| 1 | Mallard | 12 | 9 | 8 | 7 | 35 | |
| 1 | Green-winged Teal | 1 | 31 | 8 | 17 | 25 | |
| 1 | Lesser Scaup | 1 | |||||
| 1 | Surf Scoter | 15 | 8 | 3 | 4 | 32 | |
| 1 | Bufflehead | 5 | 18 | 12 | |||
| 1 | Red-breasted Merganser | 20 | 5 | 4 | 2 | ||
| 1 | Ruddy Duck | 12 | 22 | 37 | 30 | 1 | |
| 2 | Pied-billed Grebe | 1 | 4 | 6 | 2 | 2 | |
| 2 | Horned Grebe | 1 | |||||
| 2 | Eared Grebe | 1 | 1 | ||||
| 2 | Western Grebe | 28 | 13 | 18 | 14 | 240 | |
| 7 | Feral Pigeon | 4 | 3 | 4 | 4 | 4 | 4 |
| 7 | Eurasian Collared-Dove | 1 | |||||
| 7 | Mourning Dove | 5 | 1 | 4 | |||
| 8 | Anna’s Hummingbird | 2 | 2 | 2 | 1 | ||
| 8 | Allen’s Hummingbird | 1 | 4 | 1 | 3 | 5 | 5 |
| 2 | Sora | 1 | |||||
| 2 | American Coot | 49 | 157 | 230 | 280 | 148 | 46 |
| 5 | Black Oystercatcher | 1 | |||||
| 5 | Black-bellied Plover | 82 | 79 | 7 | 52 | 45 | 42 |
| 5 | Killdeer | 6 | 1 | 5 | 20 | 18 | 12 |
| 5 | Semipalmated Plover | 3 | |||||
| 5 | Snowy Plover | 22 | 18 | 1 | 21 | ||
| 5 | Whimbrel | 32 | 23 | 4 | 8 | 4 | 6 |
| 5 | Long-billed Curlew | 3 | |||||
| 5 | Marbled Godwit | 48 | 45 | 5 | 11 | 5 | 20 |
| 5 | Short-billed Dowitcher | 2 | |||||
| 5 | Spotted Sandpiper | 3 | |||||
| 5 | Willet | 29 | 56 | 12 | 22 | 3 | 15 |
| 5 | Ruddy Turnstone | 4 | 10 | 1 | 10 | 5 | 2 |
| 5 | Sanderling | 32 | 27 | 69 | 10 | 7 | 10 |
| 5 | Least Sandpiper | 18 | 6 | 35 | 28 | 16 | 20 |
| 5 | Western Sandpiper | 15 | 8 | ||||
| 6 | Bonaparte’s Gull | 3 | |||||
| 6 | Heermann’s Gull | 51 | 55 | 71 | 22 | 12 | 60 |
| 6 | Ring-billed Gull | 4 | 42 | 34 | 25 | 200 | |
| 6 | Western Gull | 65 | 45 | 68 | 64 | 30 | 85 |
| 6 | Herring Gull | 1 | 1 | 2 | |||
| 7 | Lesser Black-backed Gull | 1 | |||||
| 6 | California Gull | 7 | 7 | 220 | 425 | 270 | 400 |
| 6 | Glaucous-winged Gull | 1 | 5 | 3 | 3 | ||
| 6 | Forster’s Tern | 1 | |||||
| 6 | Elegant Tern | 24 | 2 | 1 | |||
| 6 | Royal Tern | 4 | 5 | 12 | 7 | 3 | |
| 2 | Red-throated Loon | 1 | |||||
| 2 | Pacific Loon | 1 | 1 | 1 | |||
| 2 | Common Loon | 1 | |||||
| 2 | Black-vented Shearwater | 20 | 28 | ||||
| 2 | Brandt’s Cormorant | 1 | 1 | ||||
| 2 | Pelagic Cormorant | 1 | 2 | 5 | 1 | 4 | |
| 2 | Double-crested Cormorant | 30 | 48 | 37 | 47 | 18 | 28 |
| 2 | Brown Pelican | 27 | 12 | 26 | 72 | 26 | 300 |
| 3 | Black-crowned Night-Heron | 2 | 1 | 1 | |||
| 3 | Snowy Egret | 5 | 2 | 20 | 18 | 7 | 6 |
| 3 | Green Heron | 3 | 1 | ||||
| 3 | Great Egret | 6 | 4 | 2 | |||
| 3 | Great Blue Heron | 3 | 2 | 4 | 2 | 1 | 3 |
| 4 | Turkey Vulture | 1 | 2 | 2 | |||
| 4 | Osprey | 1 | 1 | 2 | 1 | 1 | |
| 4 | Red-shouldered Hawk | 1 | 1 | ||||
| 4 | Red-tailed Hawk | 1 | 2 | 1 | |||
| 8 | Belted Kingfisher | 2 | 1 | 1 | 1 | 2 | |
| 8 | Downy Woodpecker | 1 | |||||
| 8 | Nuttall’s Woodpecker | 1 | 1 | ||||
| 8 | Hairy Woodpecker | 1 | |||||
| 8 | Northern Flicker (Red-shafted) | 1 | |||||
| 4 | American Kestrel | 1 | |||||
| 4 | Peregrine Falcon | 1 | |||||
| 8 | Nanday Parakeet | 2 | |||||
| 9 | Black Phoebe | 4 | 4 | 2 | 4 | 1 | 4 |
| 9 | Say’s Phoebe | 1 | |||||
| 9 | Cassin’s Kingbird | 1 | |||||
| 9 | California Scrub-Jay | 2 | 1 | 2 | 2 | ||
| 9 | American Crow | 6 | 44 | 3 | 5 | 10 | 10 |
| 9 | Common Raven | 2 | 1 | ||||
| 9 | Oak Titmouse | 3 | 1 | 1 | |||
| 9 | Northern Rough-winged Swallow | 2 | |||||
| 9 | Barn Swallow | 4 | |||||
| 9 | Bushtit | 8 | 22 | 50 | 12 | 12 | |
| 9 | Wrentit | 4 | 1 | 4 | 3 | 1 | 2 |
| 9 | Ruby-crowned Kinglet | 1 | |||||
| 9 | Blue-gray Gnatcatcher | 2 | 1 | ||||
| 9 | House Wren | 2 | 2 | 3 | 2 | 1 | |
| 9 | Marsh Wren | 1 | |||||
| 9 | Bewick’s Wren | 1 | 1 | ||||
| 9 | European Starling | 15 | 12 | 22 | 28 | 2 | 19 |
| 9 | Hermit Thrush | 1 | |||||
| 9 | House Finch | 6 | 5 | 6 | 9 | 12 | 12 |
| 9 | Lesser Goldfinch | 2 | 6 | 20 | |||
| 9 | Dark-eyed Junco | 2 | |||||
| 9 | White-crowned Sparrow | 10 | 20 | 27 | 15 | 12 | |
| 9 | Savannah Sparrow | 1 | |||||
| 9 | Song Sparrow | 5 | 5 | 6 | 7 | 10 | 10 |
| 9 | California Towhee | 3 | 1 | 2 | 1 | 1 | 2 |
| 9 | Red-winged Blackbird | 7 | 15 | 16 | 2 | 35 | |
| 9 | Great-tailed Grackle | 1 | 20 | 1 | 1 | ||
| 9 | Orange-crowned Warbler | 1 | 2 | 2 | 2 | ||
| 9 | Common Yellowthroat | 2 | 4 | 8 | 5 | 5 | 2 |
| 9 | Yellow-rumped Warbler (Audubon’s) | 5 | 12 | 6 | 6 | 10 | |
| 9 | Townsend’s Warbler | 1 | |||||
| 9 | Wilson’s Warbler | 1 | |||||
| 9 | Western Tanager | 1 | |||||
| 9 | Black-headed Grosbeak | 1 | |||||
| Totals by Type | Sep | Oct | Nov | Dec | Jan | Feb | |
| 1 | Waterfowl | 53 | 51 | 134 | 155 | 149 | 144 |
| 2 | Water Birds – Other | 129 | 280 | 314 | 426 | 211 | 621 |
| 3 | Herons, Egrets & Ibis | 13 | 11 | 28 | 23 | 9 | 9 |
| 4 | Quail & Raptors | 4 | 4 | 5 | 4 | 2 | 0 |
| 5 | Shorebirds | 299 | 265 | 139 | 162 | 103 | 156 |
| 6 | Gulls & Terns | 152 | 118 | 416 | 562 | 345 | 748 |
| 7 | Doves | 9 | 4 | 4 | 4 | 4 | 9 |
| 8 | Other Non-Passerines | 6 | 10 | 1 | 9 | 6 | 8 |
| 9 | Passerines | 82 | 154 | 146 | 119 | 88 | 158 |
| Totals Birds | 747 | 897 | 1187 | 1464 | 917 | 1853 | |
| Total Species | Sep | Oct | Nov | Dec | Jan | Feb | |
| 1 | Waterfowl | 3 | 4 | 10 | 11 | 10 | 7 |
| 2 | Water Birds – Other | 7 | 8 | 7 | 8 | 8 | 8 |
| 3 | Herons, Egrets & Ibis | 4 | 4 | 3 | 4 | 3 | 2 |
| 4 | Quail & Raptors | 4 | 3 | 3 | 3 | 2 | 0 |
| 5 | Shorebirds | 14 | 9 | 9 | 9 | 8 | 10 |
| 6 | Gulls & Terns | 6 | 6 | 8 | 9 | 7 | 5 |
| 7 | Doves | 2 | 2 | 1 | 1 | 1 | 3 |
| 8 | Other Non-Passerines | 4 | 5 | 1 | 6 | 2 | 3 |
| 9 | Passerines | 23 | 17 | 18 | 17 | 16 | 19 |
| Totals Species – 108 | 67 | 58 | 60 | 68 | 57 | 57 |
Tom Gauld on the journey to a magma chamber | New Scientist
[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.


