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Trend Analysis Form

Draft Version..not for public use!

This part of the Home Page allows you to select a species, a region, and a starting and ending year, and the Home Page will conduct an analysis for that species, region, and period. This is a draft web site, placed on our server for comment (but not linked to the public server). Please exercise caution in reviewing the results, and provide use with any comments you may have on the program.
Please note: the LOESS procedure will only work for long-term trends, as it uses a data quality criterion that excludes routes that are not run for most of the interval.
Please select the species of interest:
Common Loon Pied-billed Grebe
Horned Grebe Red-necked Grebe Eared Grebe
Western/Clark's Grebe American White Pelican Brown Pelican
Double-crest. Cormorant Pelagic Cormorant Anhinga
American Bittern Least Bittern Great Blue Heron
Great Egret Snowy Egret Little Blue Heron
Tricolored Heron Cattle Egret Green Heron
Black-crn. Night Heron Yellow-crn. Night Heron White Ibis
Glossy Ibis White-faced Ibis Roseate Spoonbill
Wood Stork Black Vulture Turkey Vulture
Black-bell. Whist. Duck Fulvous Whistling-Duck Canada Goose
Mute Swan Wood Duck Gadwall
American Wigeon American Black Duck Mallard
Mottled Duck Blue-winged Teal Cinnamon Teal
Northern Shoveler Northern Pintail Green-winged Teal
Canvasback Redhead Ring-necked Duck
Lesser Scaup Bufflehead Common Goldeneye
Barrow's Goldeneye Hooded Merganser Common Merganser
Red-breasted Merganser Ruddy Duck Osprey
Swallow-tailed Kite White-tailed Kite Mississippi Kite
Bald Eagle Northern Harrier Sharp-shinned Hawk
Cooper's Hawk Northern Goshawk Harris's Hawk
Red-shouldered Hawk Broad-winged Hawk Swainson's Hawk
Red-tailed Hawk Ferruginous Hawk Golden Eagle
Crested Caracara American Kestrel Merlin
Peregrine Falcon Prairie Falcon Chukar
Gray Partridge Ring-necked Pheasant Ruffed Grouse
Sage Grouse Blue Grouse Sharp-tailed Grouse
Greater Prairie-Chicken Wild Turkey Mountain Quail
Scaled Quail California Quail Gambel's Quail
Northern Bobwhite Clapper Rail King Rail
Virginia Rail Sora Purple Gallinule
Common Moorhen American Coot Sandhill Crane
Killdeer Mountain Plover Black-necked Stilt
American Avocet Greater Yellowlegs Lesser Yellowlegs
Solitary Sandpiper Willet Spotted Sandpiper
Upland Sandpiper Long-billed Curlew Marbled Godwit
Common Snipe American Woodcock Wilson's Phalarope
Laughing Gull Franklin's Gull Ring-billed Gull
California Gull Herring Gull Western Gull
Glaucous-winged Gull Great Black-backed Gull Gull-billed Tern
Caspian Tern Royal Tern Common Tern
Forster's Tern Least Tern Black Tern
Black Skimmer Rock Dove Band-tailed Pigeon
Eurasian Collared-Dove White-winged Dove Mourning Dove
Inca Dove Common Ground-Dove Yel.-chevroned Parakeet
Black-billed Cuckoo Yellow-billed Cuckoo Greater Roadrunner
Groove-billed Ani Barn Owl Western Screech-Owl
Eastern Screech-Owl Great Horned Owl Northern Pygmy-Owl
Burrowing Owl Barred Owl Short-eared Owl
Lesser Nighthawk Common Nighthawk Common Poorwill
Chuck-will's-widow Whip-poor-will Black Swift
Chimney Swift Vaux's Swift White-throated Swift
Ruby-thr. Hummingbird Black-chin. Hummingbird Anna's Hummingbird
Costa's Hummingbird Calliope Hummingbird Broad-tail. Hummingbird
Rufous Hummingbird Allen's Hummingbird Belted Kingfisher
Lewis's Woodpecker Red-headed Woodpecker Acorn Woodpecker
Gila Woodpecker Gol.-fronted Woodpecker Red-bellied Woodpecker
Williamson's Sapsucker Sapsucker (3 species) Sapsucker (2 species)
Yellow-bell. Sapsucker Red-naped Sapsucker Red-breasted Sapsucker
Ladder-back. Woodpecker Nuttall's Woodpecker Downy Woodpecker
Hairy Woodpecker Red-cockaded Woodpecker White-headed Woodpecker
Three-toed Woodpecker Black-backed Woodpecker Northern Flicker
Gilded Flicker Pileated Woodpecker Olive-sided Flycatcher
WesternWood-Pewee EasternWood-Pewee Yellow-bell. FLycatcher
AcadianFlycatcher Alder Flycatcher Willow Flycatcher
Willow/Alder Flycatcher Least Flycatcher Hammond's Flycatcher
Gray Flycatcher Dusky Flycatcher Pac.-sl./Co. Flycatcher
Black Phoebe Eastern Phoebe Say's Phoebe
Vermilion Flycatcher Ash-throated Flycatcher Grt. Crested Flycatcher
Brown-crest. Flycatcher Couch's Kingbird Cassin's Kingbird
Western Kingbird Eastern Kingbird Scissor-tld. Flycatcher
Loggerhead Shrike White-eyed Vireo Bell's Vireo
Gray Vireo Yellow-throated Vireo Plumbeous Vireo
Cassin's Vireo Blue-headed Vireo Hutton's Vireo
Warbling Vireo Philadelphia Vireo Red-eyed Vireo
Gray Jay Steller'sJay Blue Jay
Green Jay Western Scrub-Jay Pinyon Jay
Clark's Nutcracker Black-billed Magpie Yellow-billed Magpie
American Crow Northwestern Crow Fish Crow
Chihuahuan Raven Common Raven Horned Lark
Purple Martin Tree Swallow Violet-green Swallow
N. Rough-winged Swallow Bank Swallow Cliff Swallow
Cave Swallow Barn Swallow Carolina Chickadee
Black-capped Chickadee Mountain Chickadee Chestnut-bkd. Chickadee
Boreal Chickadee Oak Titmouse Juniper Titmouse
Tufted Titmouse Verdin Bushtit
Red-breasted Nuthatch White-breasted Nuthatch Pygmy Nuthatch
Brown-headed Nuthatch Brown Creeper Cactus Wren
Rock Wren Canyon Wren Carolina Wren
Bewick's Wren House Wren Winter Wren
Sedge Wren Marsh Wren American Dipper
Golden-crowned Kinglet Ruby-crowned Kinglet Blue-gray Gnatcatcher
Black-tail. Gnatcatcher Eastern Bluebird Western Bluebird
Mountain Bluebird Townsend's Solitaire Veery
Swainson's Thrush Hermit Thrush Wood Thrush
American Robin Varied Thrush Wrentit
Gray Catbird Northern Mockingbird Sage Thrasher
Brown Thrasher Long-billed Thrasher Bendire's Thrasher
Curve-billed Thrasher California Thrasher Crissal Thrasher
Le Conte's Thrasher European Starling Sprague's Pipit
Cedar Waxwing Phainopepla Blue-winged Warbler
Golden-winged Warbler Tennessee Warbler Orange-crowned Warbler
Nashville Warbler Virginia's Warbler Lucy's Warbler
Northern Parula Yellow Warbler Chestnut-sided Warbler
Magnolia Warbler Cape May Warbler Black-thr. Blue Warbler
Yellow-rumped Warbler Black-thr. Gray Warbler Black-th. Green Warbler
Townsend's Warbler Hermit Warbler Blackburnian Warbler
Yellow-throated Warbler Grace's Warbler Pine Warbler
Prairie Warbler Palm Warbler Bay-breasted Warbler
Blackpoll Warbler Cerulean Warbler Black-and-white Warbler
American Redstart Prothonotary Warbler Worm-eating Warbler
Swainson's Warbler Ovenbird Northern Waterthrush
Louisiana Waterthrush Kentucky Warbler Connecticut Warbler
Mourning Warbler MacGillivray's Warbler Common Yellowthroat
Hooded Warbler Wilson's Warbler Canada Warbler
Yellow-breasted Chat Hepatic Tanager Summer Tanager
Scarlet Tanager Western Tanager Olive Sparrow
Green-tailed Towhee Spotted Towhee Eastern Towhee
Canyon Towhee California Towhee Abert's Towhee
Cassin's Sparrow Bachman's Sparrow Rufous-crowned Sparrow
Chipping Sparrow Clay-colored Sparrow Brewer's Sparrow
Field Sparrow Black-chinned Sparrow Vesper Sparrow
Lark Sparrow Black-throated Sparrow Sage Sparrow
Lark Bunting Savannah Sparrow Grasshopper Sparrow
Baird's Sparrow Henslow's Sparrow Le Conte's Sparrow
Nelson's S.t. Sparrow Seaside Sparrow Fox Sparrow
Song Sparrow Lincoln's Sparrow Swamp Sparrow
White-throated Sparrow White-crowned Sparrow Dark-eyed Junco
McCown's Longspur Chestnut-col. Longspur Northern Cardinal
Pyrrhuloxia Rose-breasted Grosbeak Black-headed Grosbeak
Blue Grosbeak Lazuli Bunting Indigo Bunting
Painted Bunting Dickcissel Bobolink
Red-winged Blackbird Tricolored Blackbird Eastern Meadowlark
Western Meadowlark Yellow-head. Blackbird Rusty Blackbird
Brewer's Blackbird Common Grackle Boat-tailed Grackle
Great-tailed Grackle Bronzed Cowbird Brown-headed Cowbird
Orchard Oriole Hooded Oriole Baltimore Oriole
Bullock's Oriole Scott's Oriole Pine Grosbeak
Purple Finch Cassin's Finch House Finch
Red Crossbill White-winged Crossbill Pine Siskin
Lesser Goldfinch Lawrence's Goldfinch American Goldfinch
Evening Grosbeak House Sparrow Eurasian Tree Sparrow

Please enter the region of interest:

Please enter the first year:

Please enter the last year:

Please select analysis method:

Return to Home Page
ver 2001.00, 2 April 2001 DRAFT, Authors: J. R. Sauer and J. E. Hines.

Data Liability Disclaimer

Although these data have been processed successfully on a computer system at the United States Geological Survey (USGS), no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a USGS server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein.

So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this home page is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the U.S. Government.