L.A. River Field Trip Report: 10 Sep., 2011
All invited.
Free Car Wash! (to every carpool driver)
A solid mile of drenching rain greeted us on the I-405 early Saturday morning as we headed for the LA River by the Willow St. bridge.

Half of the group, trying to stay out of the bicyclists’ way. Richard Barth in the blue jacket. (C. Almdale 9-10-11)
That certainly did not deter the 23 participants nor the thousands of birds we saw in five hours at four locations in the last few miles (see map link below) of our region’s largest waterway. We started downstream within viewing distance of the giant harbor derricks in an area where vegetation is allowed to grow in the river channel. We ended north of DeForest Park where only a few islands of green are on the concrete surface.
Clouds of Red-winged Blackbirds and Brown-headed Cowbirds rose from the shrubs; the deeper pools hosted Blue-winged and Cinnamon Teal, Northern Shoveler, Mallard and thousands of Black-necked Stilt. As we worked our way north we saw large flocks of Western Sandpipers; among them lurked some Least Sandpipers and even fewer of the rarer species of the family.
At our first location the exceptional birds were Wilson’s and Red-necked Phalaropes, a Pectoral Sandpiper, one White-faced Ibis, and dozens of American Avocets. Only three heron species: Great Blue Heron, Snowy Egret and one adult Black-capped Night-Heron. The Gulls were mostly Western with an occasional California. A small number of Killdeer and their cousins the Semipalmated Plover were scattered about, busily foraging. The best views of the whole day featured four Pectoral Sandpipers and three Solitary Sandpipers, all juveniles, and several very bright Orange Bishop males in breeding plumage. The rarity of the day was a single, 1st Summer (i.e. born summer 2010) Common Tern, slightly oiled, with a huge black carpel bar. We also saw three Greater Yellowlegs. At DeForest Park, trees sheltered a number of warbler species as well as several Black Phoebes.
The most colorful bird of the day, well out-of-place among all the cryptic-colored shorebirds, was a day-glo yellow-green Budgerigar, escaped no doubt from some local bird-fancier. All parrots are very social birds: this unfortunate Budgie was trying to hang out with a Western Sandpiper flock. Wherever they flew or landed, so would the Budgie, who would perch and watch while the peeps poked the wet mud for food. This is not how Budgies normally feed and I wonder how long he’ll last in this habitat.
Surprisingly enough, although nature unleashed its wrath early in the day, we enjoyed a rainless cloud cover that kept the temperatures in the upper sixties throughout the very pleasant morning.
Very special thanks to Richard Barth who frequently birds this area. His knowledge and enthusiastic explanations of difficult plumage are invaluable, especially during migration season!
Link to 2010 LA River Trip Report
Link to Map of Trip
[Lucien Plauzoles]
| Los Angeles River Trip |
|
| 10 Sept., 2011 |
Number |
| Canada Goose |
25 |
| Mallard |
100 |
| Blue-winged Teal |
3 |
| Cinnamon Teal |
20 |
| Northern Shoveler |
10 |
| Double-crested Cormorant |
10 |
| Great Blue Heron |
4 |
| Snowy Egret |
2 |
| Black-crowned Night-Heron |
1 |
| White-faced Ibis |
1 |
| Cooper’s Hawk |
1 |
| Red-tailed Hawk |
2 |
| American Kestrel |
2 |
| Peregrine Falcon |
1 |
| American Coot |
10 |
| Semipalmated Plover |
30 |
| Killdeer |
20 |
| Black-necked Stilt |
1000’s |
| American Avocet |
100’s |
| Spotted Sandpiper |
2 |
| Solitary Sandpiper – juv |
3 |
| Greater Yellowlegs |
3 |
| Western Sandpiper |
1000’s |
| Least Sandpiper |
50 |
| Pectoral Sandpiper – juv |
4 |
| Long-billed Dowitcher |
100’s |
| Wilson’s Phalarope |
6 |
| Red-necked Phalarope |
10 |
| Ring-billed Gull |
20 |
| Western Gull |
100’s |
| California Gull |
50 |
| Caspian Tern |
8 |
| Common Tern – 1st summer |
1 |
| Rock Pigeon |
40 |
| Anna’s Hummingbird |
6 |
| Downy Woodpecker |
1 |
| Black Phoebe |
20 |
| American Crow |
20 |
| Barn Swallow |
100 |
| Northern Mockingbird |
2 |
| Orange-crowned Warbler |
1 |
| Yellow Warbler |
2 |
| Black-throated Gray Warbler |
1 |
| Wilson’s Warbler |
4 |
| California Towhee |
2 |
| Savannah Sparrow |
1 |
| Red-winged Blackbird |
100’s |
| Yellow-headed Blackbird |
5 |
| Brown-headed Cowbird |
100’s |
| House Finch |
30 |
| Lesser Goldfinch |
1 |
| House Sparrow |
30 |
| Budgerigar |
1 |
| Orange Bishop |
20 |
| Total Species |
54 |
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