birds at bridgeport
DESCRIPTION
Birds at Bridgeport. South Yuba River State Park. Birds at Bridgeport. Introductory sample, selected by Ed Pandolfino Pictures and sound extracted from Internet by Herb Lindberg. Resident year around - PowerPoint PPT PresentationTRANSCRIPT
Introductory sample, selected by Ed Pandolfino
Pictures and sound extracted from Internetby Herb Lindberg
Birds at Bridgepo
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Resident year around
Acorn WoodpeckerWestern Scrub JaySteller’s JayBlack PhoebeSpotted TowheeCalifornia QuailAmerican DipperAmerican Robin
Summer Visitors
Cliff SwallowBullock’s Oriole
Winter Visitors
Dark-eyed JuncoRuby-crowned KingletGolden-crowned Sparrow
Three groups of birds:
Bird Groups
Note: In all the slides with a speaker symbol, move your mouse around until the arrow cursor appears and then click on the speaker to hear the bird’s call. This takes a bit of time for long bird calls.
To jump ahead or back to a specific bird, right click anywhere and use “Go.”
Presentatio
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Residents Year Around
---RESIDENTS YEAR AROUND---
• Nest in communal groups; some guard hoard while others are away
• Can be spotted on dead trees or branches where holes for acorns can be drilled
• Sounds like Woody Woodpecker
Acorn Woodpecker
• Buries acorns that often sprout, so they are critical “oak farmers”
• Piercing call
• It’s blue, and a jay, but is NOT a Blue Jay
Western Scrub Jay
• Generally at higher altitudes than Western Scrub Jay; both found at foothills altitude of Bridgeport.
• Both are aggressive with piercing calls
• Both are blue and jays, but not Blue Jays
Steller's Jay
• Flycatcher
• Usually close to water
• Repetitive two-note song
Black Phoebe
• Forages on the ground doing a ‘two-foot-kick’ dance (kicks material backwards with both feet at once and a hop).
• Covers wide range of altitudes.
• Formerly known as Rufous-sided Towhee
Spotted Towhee
• Male (shown here) has dark, smooth plume and black and white face and throat pattern; females are duller with fuzzy plume.
•Male is chief baby sitter.
• Groups often stay in contact with little sputtering sounds.
• Very susceptible to domestic cats.
• Male’s song is a dragged out “Chi-ca-go” :
California Quail
• A bird of mountain streams, and is always near the water.
• Has a most interesting feeding method: perches on stream rock as here, dives into the water and flies underwater against strong current while eating larvae etc. on rocks and river bottom.
• Also known as the Water Ouzel
• Complex exuberant song -- John Muir’s favorite bird.
American Dipper
• Very familiar bird, often seen walking erect on the ground.
• A clear caroling song; short phrases, rising and falling, often prolonged.
American Robin
Summer Visitors
---SUMMER
VISITORS---
• Vacuums up insects on the wing.
• Builds dense colonies of mud nests under eaves and bridges. Thousands of mouthfuls of mud in each nest for Spring nesting.
• Winters in southern South America.
• This is the Capistrano Swallow.
Cliff Swallow
• Winters in Central America
• Formerly lumped with Baltimore Oriole as Northern Oriole
• Charming, bouncy song, harsh chatter
Song:
Chatter:
Bullock's Oriole
Winter Visitors
---WINTE
R VISITORS---
• Usually found in actively-foraging flocks.
• Primarily a ground feeder, as here.
Dark-eyed Junco
• Non-stop forager with an attitude
•Only shows ruby crown (male) when angry
•Breeds mainly in mountains
Ruby-crowned Kinglet
• Migrates up west coast as far as Alaska
• Lacks “golden” crown until mature
• Plaintive “Oh .. Dear .. me” song
Golden-crowned Sparrow
Credits
• Photographs
– Ruby-crowned Kinglet http://www.nenature.com/RubyCrownedKingletPhoto.htm,http://www.mbr-pwrc.usgs.gov/id/framlst/i7490id.html
– All othershttp://elib.cs.berkeley.edu/photos/fauna/com-Bird.html
• Sound
– American Dipper http://www.mbr-pwrc.usgs.gov/id/framlst/i7490id.html
– All Others:Doug Von Gausig athttp://www.naturesongs.com/species.html