A foggy morning at the lagoon, outlet closed, the water high, colored flags marking the small plants, an occasional unflagged weed and, frankly, not many birds. See the charts below and on our Lagoon Project Page for the statistics.
Channel area view from Las Virgenes Rd. (L. Plauzoles 04/13/13)
The ducks are dwindling as springtime calls them north. It was an off day for the shorebirds, with only five “peeps” present: two Western Sandpipers, a single Ruddy Turnstone, two Spotted Sandpipers now sporting breeding breast-spots. The gulls continue to be fewer than average: we didn’t find any Ring-bills among the few California and Western Gulls, but Heermann’s, absent since January, begin to return from their breeding grounds on islands near the tip of Baja California. A single Clark’s Grebe was out past the kelp with a small group of Western Grebes.
“Elegant, my foot! He tries that with me, Marge, and he’s going to be the least tern you ever saw.” (C.Bragg 2011)
The Elegant Terns returned, resting en route to breeding grounds farther north. They looked great and they knew it, breasts rosy from a crustacean diet, with fine black crests. Many attempted mating. ABlack-crowned Night Heron hid in the trees by the Adamson House beach fence, a White-tailed Kite searched the perimeter, eight Semipalmated Plovers combed the beach wrack, two Black Oystercatchers worked the low-tide rocks, six Caspian and three Royal Terns kept the cacophonous Elegant Terns company, and a young male Hooded Oriole – yellow, not orange – was a nice treat near the picnic table corner.
The tidal clock was working – 8 ft. 4 in. was the time, I think. A good high tide with some wave action may well open an outlet near Adamson House.
Tidal Clock at work, ticking away (J. Kenney 4/16/13)
Our next three field trips: Morongo Valley Preserve, 4-5 May; Malibu Lagoon, 26 May, 8:30am; Malibu Lagoon, 23 June, 8:30am.
Our next program: Tuesday, 7 May., 7:30 pm. Eight-legged Science: The Spider Lab at Loyola Marymount University, with Dr. Martin Ramirez. The usual reminders will be emailed from the blog.
NOTE: Our 10 a.m. Parent’s & Kids Birdwalks have resumed.
Comments on Bird Lists BelowTotal Birds: March total birds of 666 are 34% below average; low numbers are mainly in the Brown Pelicans (-158) and Gulls & Terns (-197).
Species Diversity: April 2013 with 56 species was 2% below the 57.2 6-year average, a minor variance.
Summary of species diversity from the 6-year average so far: June -10%, July +10%, Aug. -6%, Sep. -20%, Oct. +5%, Nov +2%, Dec -4%, Jan +2%, Feb -8%, March +9%, April -2%. Still, the only constant is change.
10-year comparison summaries are available on our
Lagoon Project Bird Census Page.
[Chuck Almdale]
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | |
| 27-Apr | 26-Apr | 25-Apr | 24-Apr | 22-Apr | 28-Apr | |
Temperature | 75-90 | 60-70 | 62-70 | 59-68 | 60-65 | 57-68 | |
Tide Lo/Hi Height | L +0.5 | H +3.7 | H +4.57 | L +0.19 | H +3.67 | L -1.10 | Ave. |
Tide Time | 1000 | 1128 | 0744 | 1014 | 1106 | 0609 | Birds |
Brant | | 1 | 3 | | | 3 | 1.2 |
Gadwall | 15 | 6 | 12 | 24 | 14 | 12 | 13.8 |
American Wigeon | | 4 | | | 9 | | 2.2 |
Mallard | 25 | 16 | 20 | 22 | 16 | 30 | 21.5 |
Northern Shoveler | | | | | 12 | | 2.0 |
Surf Scoter | 30 | | | | | | 5.0 |
Red-brstd Merganser | 4 | | 3 | | 5 | 3 | 2.5 |
Ruddy Duck | | 10 | | 3 | 9 | 20 | 7.0 |
Pacific Loon | 2 | 2 | 4 | 20 | 3 | 1 | 5.3 |
Common Loon | 1 | | 3 | 1 | | | 0.8 |
Pied-billed Grebe | 4 | 4 | 1 | | 2 | 6 | 2.8 |
Eared Grebe | 6 | | | | 2 | | 1.3 |
Western Grebe | 50 | | 35 | 2 | 1 | 28 | 19.3 |
Brandt’s Cormorant | 8 | 1 | | 3 | 1 | 7 | 3.3 |
Dble-crstd Cormorant | 25 | 14 | 22 | 19 | 65 | 22 | 27.8 |
Pelagic Cormorant | 2 | 1 | 1 | 2 | | 1 | 1.2 |
Brown Pelican | 35 | 78 | 182 | 740 | 80 | 34 | 191.5 |
Great Blue Heron | 2 | 1 | | 4 | 1 | 2 | 1.7 |
Great Egret | 2 | | 2 | | 2 | 2 | 1.3 |
Snowy Egret | 8 | 7 | 13 | 11 | 9 | 9 | 9.5 |
Blk-crwnd N-Heron | 1 | | | 1 | 1 | 1 | 0.7 |
Red-tailed Hawk | | 1 | | 2 | | | 0.5 |
Sora | 1 | | 1 | | 1 | | 0.5 |
American Coot | 65 | 38 | 35 | 32 | 95 | 58 | 53.8 |
Blk-bellied Plover | | 30 | 7 | | 11 | | 8.0 |
Snowy Plover | 1 | | | | 3 | 6 | 1.7 |
Semipalmated Plover | 15 | 15 | 13 | 25 | 3 | 8 | 13.2 |
Killdeer | 4 | 2 | 4 | 8 | 4 | 2 | 4.0 |
Black-necked Stilt | | | | | 4 | | 0.7 |
Spotted Sandpiper | 1 | 3 | 3 | | 1 | 2 | 1.7 |
Willet | 4 | 4 | 1 | | | 1 | 1.7 |
Whimbrel | 1 | 6 | 5 | 3 | 5 | 8 | 4.7 |
Marbled Godwit | | 10 | 4 | | 8 | | 3.7 |
Ruddy Turnstone | 5 | 25 | 2 | | 1 | 1 | 5.7 |
Black Turnstone | 1 | | | | 2 | | 0.5 |
Surfbird | | | 3 | | | | 0.5 |
Western Sandpiper | 15 | 10 | | 12 | 16 | 2 | 9.2 |
Least Sandpiper | 4 | 2 | 30 | 25 | 5 | | 11.0 |
Boneparte’s Gull | | | 5 | 2 | | | 1.2 |
Heermann’s Gull | 3 | 1 | 45 | 3 | 1 | 14 | 11.2 |
Ring-billed Gull | 8 | 4 | 4 | 52 | 20 | | 14.7 |
Western Gull | 35 | 85 | 105 | 160 | 85 | 112 | 97.0 |
California Gull | 65 | 6 | 108 | 450 | 75 | 25 | 121.5 |
Glaucous-wingd Gull | | 3 | 1 | 2 | 1 | 3 | 1.7 |
Caspian Tern | 13 | 41 | 30 | 61 | 25 | 6 | 29.3 |
Forster’s Tern | | 2 | | 1 | | | 0.5 |
Royal Tern | 4 | 2 | 1 | | | 3 | 1.7 |
Elegant Tern | 245 | 700 | 40 | 12 | 65 | 134 | 199.3 |
Rock Pigeon | 6 | 4 | 4 | 4 | 3 | 12 | 5.5 |
Mourning Dove | 2 | 2 | 6 | 4 | 2 | 2 | 3.0 |
Anna’s Hummingbird | 2 | 1 | 2 | 2 | 2 | 1 | 1.7 |
Allen’s Hummingbird | 3 | 4 | 3 | 2 | 2 | 4 | 3.0 |
Black Phoebe | 6 | 10 | 10 | 8 | 4 | 7 | 7.5 |
American Crow | 4 | 5 | 4 | 5 | 5 | 4 | 4.5 |
Rough-wingd Swallow | 4 | 3 | 10 | 16 | 6 | 10 | 8.2 |
Barn Swallow | 8 | 4 | 2 | 10 | 1 | 6 | 5.2 |
Cliff Swallow | 20 | 4 | 2 | | | | 4.3 |
Bushtit | 6 | 2 | 6 | | 2 | 4 | 3.3 |
Bewick’s Wren | | | | 2 | 1 | 1 | 0.7 |
Northern Mockingbird | 4 | 1 | 2 | 2 | 2 | 5 | 2.7 |
European Starling | 6 | 6 | 4 | | 4 | 4 | 4.0 |
Cedar Waxwing | | | 20 | | | | 3.3 |
Yellow-rumpd Warbler | | | 2 | 4 | | | 1.0 |
Common Yellowthroat | 1 | 2 | | 6 | 3 | | 2.0 |
Spotted Towhee | 1 | 1 | 4 | | | | 1.0 |
California Towhee | | | 3 | | | 2 | 0.8 |
Song Sparrow | 8 | 6 | 12 | 10 | 8 | 15 | 9.8 |
Red-winged Blackbird | | 2 | 1 | 1 | 6 | | 1.7 |
Great-tailed Grackle | | 1 | | 2 | 8 | 5 | 2.7 |
Brwn-headed Cowbird | 1 | 2 | 1 | | 2 | | 1.0 |
House Finch | 6 | 4 | 6 | 10 | 6 | 8 | 6.7 |
Lesser Goldfinch | | | 2 | 1 | 2 | | 0.8 |
Totals by Type | 27-Apr | 26-Apr | 25-Apr | 24-Apr | 22-Apr | 28-Apr | Ave. |
Waterfowl | 74 | 37 | 38 | 51 | 65 | 68 | 56 |
Water Birds-Other | 200 | 138 | 284 | 820 | 250 | 160 | 309 |
Herons, Egrets | 13 | 8 | 15 | 16 | 13 | 14 | 13 |
Raptors | 0 | 2 | 0 | 3 | 1 | 1 | 1 |
Shorebirds | 52 | 109 | 73 | 74 | 63 | 32 | 67 |
Gulls & Terns | 373 | 844 | 339 | 743 | 272 | 297 | 478 |
Doves | 9 | 6 | 10 | 9 | 5 | 14 | 9 |
Other Non-Pass. | 6 | 5 | 5 | 4 | 4 | 5 | 5 |
Passerines | 80 | 53 | 92 | 83 | 60 | 75 | 74 |
Totals Birds | 807 | 1202 | 856 | 1803 | 733 | 666 | 1011 |
| 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | |
Total Species | 27-Apr | 26-Apr | 25-Apr | 24-Apr | 22-Apr | 28-Apr | Ave. |
Waterfowl | 4 | 5 | 4 | 4 | 6 | 5 | 4.7 |
Water Birds-Other | 12 | 7 | 9 | 9 | 9 | 10 | 9.3 |
Herons, Egrets | 4 | 2 | 2 | 3 | 4 | 4 | 3.2 |
Raptors | 0 | 2 | 0 | 2 | 1 | 1 | 1.0 |
Shorebirds | 11 | 12 | 11 | 6 | 12 | 9 | 10.2 |
Gulls & Terns | 7 | 9 | 9 | 9 | 7 | 7 | 8.0 |
Doves | 3 | 2 | 2 | 3 | 2 | 2 | 2.3 |
Other Non-Pass. | 3 | 2 | 2 | 2 | 2 | 2 | 2.2 |
Passerines | 17 | 15 | 18 | 17 | 15 | 16 | 16.3 |
Totals Species | 61 | 56 | 57 | 55 | 58 | 56 | 57.2 |