16 April 2016, Tilden Regional Park, Lone Oak Entrance, 520 ft, Alameda Co., California
5:30 a.m. – 9:30 a.m.
52°F, cool, 0% cloud cover, no breeze.
Field trip with Andrew Rush and Jim McGuire, to listen to the dawn chorus and mist net birds. Our group sat at some picnic tables just E of the parking lot to listen in silence for the chorus to begin. This area of the park is oak-bay woodland with some conifers, California buckeye, and coyote brush. Also poison oak, some willows, vetch, bedstraw, poison hemlock, teasel, and French broom. The area near the lot is highly disturbed, with non-native grasses, foxtails, oats, geranium, pineapple weed, and shepherd's purse.
5:40 a.m. - Two great horned owls, one higher pitched than the other. Andrew told us that it was a male and female. American robin.
5:46 a.m. - Pacific slope flycatcher calls to our E, in the direction of the owls. Black-headed grosbeak, spotted towhee, song sparrow, dark-eyed junco.
5:52 a.m. - Wild turkey gobbles.
5:56 a.m. - Chestnut-backed chickadee calls.
5:58 a.m. - Black phoebe, mourning dove.
6:02 a.m. - Wilson's warbler.
6:04 a.m. - California quail, common raven.
6:05 a.m. - Steller's jay.
6:07 a.m. - Red-breasted nuthatch, California towhee.
6:10 a.m. - American crow.
6:14 a.m. - Brown creeper.
The owls were to our E. It sounded to me like most of the small birds were singing in trees N or W of where the great horned owls were calling (the owls called the entire time).
At 6:20 a.m. we opened the nets. Birds netted on this trip were one hermit thrush, one orange-crowned warbler, one song sparrow, and one Wilson's warbler.
Vertebrate List for Entire Group
Double-crested cormorant (flying)
Turkey vulture (1)
Red-tailed hawk (1)
Cooper's hawk (1)
Sharp-shinned hawk (1)
California quail
Wild turkey
Band-tailed pigeon
Mourning dove
Great horned owl
Anna's hummingbird
Allen's hummingbird
Acorn woodpecker
Hairy woodpecker
Nuttall's woodpecker
Northern Flicker (1)
Pacific slope flycatcher
Black phoebe (1)
Warbling vireo (1)
Hutton's vireo
Steller's jay (1)
American crow (7)
Common raven (2)
Western scrub jay
Violet-green swallow
Tree swallow
Chestnut-backed chickadee (2)
Bushtit
Brown creeper
Bewick's wren
Ruby-crowned kinglet (1)
Wrentit
American robin
Hermit thrush (1)
Orange-crowned warbler (1)
Wilson's warbler (1)
Western tanager (1)
Black-headed grosbeak (1)
Song sparrow (1)
California towhee
Spotted towhee
Dark-eyed junco
Purple finch (1)
Lesser goldfinch
Batrachoseps attenuatus
Elgaria coerulea (2)
Thamnophis atratus (1)
Thomomys bottae (sign)
Sciurus niger (1)
Odocoileus hemionus (1)
Neotoma fuscipes (nest)
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