Lesser Black-backed Gull (5th cycle) 20 September 2006, Horseshoe Lake, Loveland, Colorado

• 2023 Biggest Year (1)
• 2023 Biggest Year Photo Checklist (0)
• WATERFOWL (64)
• GALLINACEOUS (CHICKEN-LIKE) BIRDS (39)
• DOVES (27)
• CUCKOOS (6)
• NIGHTJARS (5)
• SWIFTS (6)
• HUMMINGBIRDS (32)
• RAILS, CRANES (33)
• SHOREBIRDS (105)
• JAEGERS (6)
• ALCIDS (25)
• GULLS, TERNS (100)
• FLAMINGO AND GREBES (12)
• TROPICBIRDS (6)
• LOONS (6)
• TUBENOSES (37)
• STORKS (1)
• BOOBIES and CORMORANTS (38)
• WADERS and PELICANS (28)
• VULTURES (4)
• HAWKS (34)
• OWLS (17)
• KINGFISHERS and Allies (7)
• WOODPECKERS (37)
• FALCONS (6)
• PARROTS and Allies (20)
• SONGBIRDS (0)
• NEW WORLD FLYCATCHERS (41)
• MYZOMELAS and HONEYEATERS (3)
• VIREOS (18)
• SHRIKES and CROWS (32)
• TITS (16)
• LARKS and REED-WARBLERS (3)
• SWALLOWS (11)
• BULBULS TO GNATCATCHERS (33)
• WRENS (11)
• THRASHERS (13)
• DIPPER and STARLINGS (7)
• THRUSHES (30)
• OLD WORLD FINCHES and SPARROWS (18)
• PIPITS (4)
• FINCHES (48)
• NEW WORLD SPARROWS (72)
• BLACKBIRDS and ORIOLES (41)
• WOOD-WARBLERS (82)
• TANAGERS (50)
• Biggest Year - Project Description (0)
• Biggest Year - Tour Schedule (20)
• 2015 Bird Photos (103)
• 2014 Bird Photos (73)
• 2013 Bird Photos (64)
• Meet the Komar Family! (25)
• Upcoming Birding Tours (22)
• Publications (1)
• Birds (0)
• Best Pics (29)
• El Salvador 2008 Best Pix (38)
• Best Bird Pics from Guatemala (11)
• Brown Pelican eats a fish (4)
• Best bird pics from Ecuador (13)
• Best Bird Pics from Peru (5)
• Brazil Birds Best Pix (22)
• Birds of the USA (483 species) (0)
• Geese, Swans, Ducks (87)
• Gallinaceous Birds (23)
• Loons and Grebes (21)
• Frigatebirds, Boobies, Cormorants (6)
• Pelicans and Waders (38)
• Vultures, Kites, Eagles, Hawks (88)
• Caracara and Falcons (21)
• Rails, Cranes (12)
• Shorebirds, Gulls, Terns, Jaegers, Alcids (0)
• Plovers (13)
• Sandpipers (63)
• Phalaropes (7)
• Gulls (72)
• Terns (15)
• Jaegers (5)
• Alcids (2)
• Pigeons, Doves (8)
• Parrots and Trogons (5)
• Cuckoos (4)
• Owls (20)
• Goatsuckers (5)
• Hummingbirds, Swifts (40)
• Kingfishers (2)
• Woodpeckers (33)
• Songbirds (0)
• Tyrannidae (Flycatchers) (34)
• Laniidae (Shrikes) (4)
• Vireonidae (Vireos) (14)
• Corvidae (Crows and allies) (17)
• Alaudidae (Larks) (2)
• Hirundinidae (Swallows) (20)
• Paridae (Chickadees and allies) (17)
• Troglodytidae (Wrens) (11)
• Polioptilidae (Gnatcatchers) (7)
• Cinclidae (American Dipper) (1)
• Regulidae (Kinglets) (2)
• Sylviidae (Wrentit) (1)
• Turdidae (Thrushes and allies) (19)
• Mimidae (Thrashers and allies) (10)
• Sturnidae (European Starling) (2)
• Motacillidae (Pipits) (2)
• Bombycillidae Waxwings (4)
• Calcariidae (Longspurs and Snow Bunting) (5)
• Parulidae (Warblers and allies) (71)
• Emberizidae (Sparrows and allies) (72)
• Cardinalidae (Cardinals and allies) (26)
• Icteridae (Blackbirds and allies) (43)
• Fringillidae (Finches) (33)
• Passeridae (Weavers) (3)
• Common Birds in Fort Collins (30)
• Rare Birds (0)
• Snowy or Kentish Plover? (52)
• Hybrid Greater x Lesser Scaup (NOT) (13)
• Purple Finch in Larimer County, 3 January 2015 (4)
• Hybrid Ross's x Cackling Goose in Larimer County, 24 Dec 2014 (7)
• Mexican, Mottled or hybrid Duck? (13)
• A melanistic Hairy Woodpecker, 24 June 2014, Rist Canyon CO (3)
• Painted Redstart, Weld County, 1 May 2014 (4)
• Kumlien's Gull, Aurora CO, 11 Jan 2014 (3)
• Kumlien's Gull, Aurora CO, 11 Jan 2014 (7)
• Confusing Fall Hummingbirds (1)
• Broad-tailed Hummingbird (9)
• Broad-tailed? Hummingbird (24)
• Broad-tailed? Hummingbird (3)
• Rufous Hummingbird (11)
• Rufous Hummingbird (2)
• Rufous Hummingbird (3)
• Calliope Hummingbird (6)
• Ruby-throated Hummingbird (3)
• Ruby-throated? Hummingbird (3)
• Black-chinned Hummingbird (2)
• Black-chinned Hummingbird (6)
• Anna's Hummingbird (6)
• Anna's Hummingbird (5)
• Laughing Gull, Morgan County, Colorado, 31 Aug 2013 (14)
• Rufous-necked Wood-Rail, New Mexico, 13 July 2013 (3)
• Sandwich Tern, Teller County, Colorado, 30 June 2013 (10)
• Painted Redstart, Montezuma County, Colorado, 17 May 2013 (3)
• Varied Thrush, Larimer County, Colorado, 17 March 2013 (4)
• Redpolls in Fort Collins, Larimer County, CO, Dec 2012 (0)
• 23 Dec 2012 (22)
• 30 Dec 2012 (18)
• Little Gull at Windsor Lake, Weld County, Colorado, 2 Dec 2012 (6)
• Brambling, Jefferson County, Colorado, 20 November 2012 (4)
• McCown's Longspur, Park County, CO, 27 October 2012 (9)
• Philadelphia Vireo, Larimer County, Colorado, 8 October 2012 (5)
• Buff-breasted Sandpipers, Morgan County, Colorado, 3 Sep 2012 (13)
• Mountain Plovers, Morgan County, Colorado, 3 Sep 2012 (4)
• Little Gulls at Union Reservoir, Weld County, Colorado 1 Dec 2011 (6)
• Atlantic Brant at Chatfield State Park, Jefferson County, Colorado, 30 Nov 2011 (9)
• Surf Scoter, Loveland, Colorado, 25 October 2011 (1)
• Yellow-crowned Night-Heron, Greeley, CO, June 2011 (4)
• Rufous-collared Sparrow in Georgetown, Colorado 8 May 2011 (12)
• Duck Hybrid, Meeker, Colorado 22 May 2011 (6)
• Ross's Gull, Arapahoe County, Colorado 19 November 2010 (10)
• Grasshopper Sparrow, Larimer County, Colorado13 November 2010 (12)
• Winter Wren in Lincoln County, Colorado, 8 Oct 2010 (5)
• Pine Warbler in Ovid, Colorado 4 July 2010 (8)
• "Traill's" Flycatcher, eastern Colorado 15 June 2010 (6)
• Another mystery vireo (18)
• Red-shouldered Hawk, Windsor, Colorado (USA), January 2010 (6)
• Photodocumentation of Chihuahuan Raven in Larimer County CO, 23 November 2009 (6)
• Mystery Loon in New York, 12 November 2009 (13)
• Possible Aleutian Goose in Larimer County, Colorado, 5 Oct 2009 (4)
• Hudsonian Godwit in Larimer County, Colorado, 24 Sep 2009 (7)
• Red Knot in Larimer County, Colorado, September 2009 (10)
• Dowitcher Identity Crisis (5)
• Neotropic Cormorant in Colorado 14 Aug 2009 (3)
• Glossy Ibis or hybrid (17)
• Eastern Meadowlark, Loveland, Colorado, 1 Jun 2009 (5)
• Possible Blue-headed Vireo, Loveland, Colorado, 10 May 2009 (16)
• Vermilion Flycatcher, Boulder County, 18 April 2009 (4)
• Ancient Murrelet in Pueblo, Colorado, 16 November 2008 (1)
• Gyrfalcon, South Park, Colorado (USA), 10 November 2008 (27)
• Least Sandpiper in winter in Larimer County, Colorado (2)
• Red-bellied Woodpecker in Loveland, Colorado 1 Jan 2008 (6)
• Odd Golden-Plover in Colorado (11)
• Better photos from David Waltman (8)
• Brown Pelican, Larimer County, Summer-Fall 2006 (0)
• Carol Amey's photos (3)
• Swans in Larimer County (0)
• Swans in Loveland 2005 (11)
• Juv Swan Update (Loveland Tundra? Swan) (5)
• Swans continue in Loveland on 3 Dec 2005 (4)
• Tundra Swan returns to southwest Loveland (6)
• Trumpeter Swan near Fort Collins, Larimer County, January 2008 (1)
• Trumpeter Swan in Larimer County,Nov - Dec 2011 (6)
• Yellow-throated Vireo nesting record, Colorado, 2002 (5)
• Hybrid Geese (Chen x Branta), Colorado (24)
• Cliff Swallow or Cave Swallow? (9)
• Black Phoebe or Mountain Bluebird? (7)
• Large Gulls (0)
• Mystery Gulls (0)
• El Salvador Mystery Gulls (40)
• Mystery Gull A (3)
• Mystery Gull B (2)
• Mystery Gull C (5)
• Mystery Gull D (0)
• Photos by Scott Surner (6)
• Photos by Cole Wild (4)
• My photos (3)
• Mystery Gull E (2)
• Mystery Gull F: Runt California Gull (3)
• Mystery Gull G (9)
• Mystery Gull H (4)
• Mystery Gull I (5)
• More photos from 3 March 2008 (11)
• Mystery Gull J (12)
• Mystery Gull K - possible Slaty-backed Gull (0)
• On Land (7)
• On the Water (18)
• In the Air (11)
• Mystery Gull L - possible Slaty-backed Gull (1)
• Mystery Gull M (13)
• Mystery Gull N (19)
• Mystery Gull O - possible Vega Gull (25)
• Mystery Gull Q - possible Vega Gull (7)
• Mystery Gull R - probable Thayer's Gull (2)
• Mystery Gull S (5)
• Mystery Gull T - possible Vega Gull (3)
• Mystery Gull W (7)
• Mystery Gull X (3)
• Mystery Gull Y Possible Vega Gull (22)
• Mystery Gull Z (18)
• Mystery Gull AA (28)
• Mystery Gull AB (7)
• Mystery Gull AC Possible Vega Gull adult (34)
• Mystery Gull AD (15)
• Mystery Gull AE, candidate Vega Gull (4)
• Great Black-backed Gull or something else? (7)
• Is this just a Lesser Black-backed Gull? (3)
• Mystery Gull AH (8)
• Vega Gull? (8)
• Vega (?) Gull (19)
• Thiceland Gull? (7)
• Mystery Gull AL (17)
• Mystery Gull AM Possible Slaty-backed Gull (10)
• Glaucous Gulls (25)
• Iceland Gulls in Larimer County, Colorado (0)
• 2006 (12)
• 2007 (0)
• Iceland Gull A (3)
• Iceland Gull B (10)
• Iceland Gull C (23)
• More Iceland Gull B from 23 April 2007 (12)
• 2008 (7)
• 2010 (4)
• 2011 (1)
• 2012 (4)
• 2013 (5)
• 2014 (5)
• Thayer's Gulls (0)
• 1st cycle Thayer's Gull (20)
• 2nd cycle Thayer's Gull (4)
• 27 Mar 2010 Windsor CO (4)
• 30 Dec 2013 Fort Collins CO (6)
• 3rd cycle Thayer's Gull (8)
• Adult Thayer's Gull (6)
• American Herring Gulls (3)
• 1st cycle (3)
• Great Black-backed Gulls (0)
• GBBG 4th cycle, Larimer County, Colorado (4)
• GBBG 1st cycle, Boulder County, Colorado (4)
• Lesser Black-backed Gulls (0)
• graellsi (1st cycle) (2)
• graellsi (2nd cycle) (2)
• Colorado, 22 March 2009 (7)
• Colorado, 13 April 2013 (4)
• graellsi (3rd cycle) (15)
• graellsi (4th cycle) (2)
• graellsi (5th cycle and definitive adult) (1)
• Lesser Black-backed Gull (5th cycle) 20 September 2006, Horseshoe Lake, Loveland, Colorado (10)
• Lesser Black-backed Gull (5th-cycle), 27 November 2013, Larimer County Landfill, Colorado (5)
• graellsi (definitive adult) (2)
• Lesser Black-backed Gull (adult) 3 October 2008, Weld County, Colorado (6)
• Lesser Black-backed Gull (adult basic), 1 Jan 2012, Larimer landfill, Colorado (USA) (2)
• intermedius (adult) (15)
• California Gulls (1)
• California Gull 3rd cycle with black tail (7)
• Subspecies albertaensis 6 Dec 2014 in Larimer County, Colorado (6)
• Ring-billed Gulls (12)
• Mew Gull, Colorado, 20 March 2008 (9)
• Gulls at Horsetooth Reservoir 11 November 2011 (21)
• Gulls at Lake Loveland, 28 December 2011 (12)
• Gulls at Horseshoe Lake, 12 April 2014 (16)
• Gulls at Horseshoe Lake, 18 April 2014 (10)
• Gulls at Horseshoe Lake, 7 Dec 2014 (19)
• Gulls at Larimer Landfill 13 Dec 2014 (15)
• Gulls at Larimer Landfill, 28 Feb 2015 (64)
• Gulls at Larimer Landfill, 4 April 2015 (31)
• Gulls at Larimer Landfill, 16 May 2015 (19)
• Gulls at Larimer Landfill, 13 June 2015 (22)
• Hybrid Gulls (0)
• Cook Inlet Gull (5)
• Nelson's Gull (1)
• Olympic Gull (1)
• Jaegers (0)
• Guatemala April 2005 (9)
• Guatemala June 2006 (6)
• Long-tailed Jaeger, Boulder County, Colorado, 7 Sep 2008 (8)
• Guatemala January 2009 (2)
• Parasitic Jaeger at Chatfield Reservoir, Douglas County, CO, 7 November 2009 (10)
• Parasitic Jaeger at Timnath Reservoir, Larimer County, CO, 13 September 2014 (4)
• Water Ouzel in Winter (5)
• Osprey Odyssey (7)
• Northern Pygmy-Owl (6)
• Loveland CBC (0)
• January 1, 2012 (33)
• January 1, 2013 (22)
• eBird pix (155)
• Birding Trips (0)
• Southeast Arizona, 5-8 September, 2015 (69)
• Southeast Colorado Weekend, 8-11 May 2015 (Quetzal Tours) (42)
• Yuma, Arizona, 27-29 April 2015 (23)
• Texas Weekend, April 2015 (39)
• Guatemala 2015 (Quetzal Tours) (69)
• San Diego Weekend, 2015 (81)
• Jamaica 2015 (Quetzal Tours) (122)
• Arizona 2014 (27)
• Bosque del Apache, 13 July 2013 (9)
• CFO Convention, 16-19 May 2013 (12)
• Southeast CO, May 10-13, 2013 (Quetzal Tours) (36)
• Colorado Grouse Tour, April 22-27, 2013 (Quetzal Tours) (24)
• Brazil 2012 - Rio de Janeiro (0)
• Parque Nacional de Tijuca (24)
• Scenery (13)
• Jardim Botanico (20)
• Pao de Azucar (Sugarloaf) (19)
• Scenery and Vegetation (11)
• Parque Nacional Serra dos Orgaos (29)
• Scenery and Vegetation (18)
• Mystery Birds (13)
• Arizona 2012 (16)
• Northwest Missouri, August 2012 (29)
• Western Colorado, 21-22 May 2011 (18)
• Orange County, California, March 2011 (58)
• Brazil 2010 (98)
• Other stuff (not birds) (25)
• Brazil Birds Best Pix (22)
• El Salvador 2008 (0)
• El Salvador 2008 Best Pix (38)
• 1. Suburban San Salvador (21)
• 2. San Salvador Volcano (19)
• 3. Cerro Verde (11)
• 4. El Imposible National Park (32)
• esgrha (0)
• Gray Hawk (11)
• 5. Sonsonate Coast (24)
• Ecuador 2007 (0)
• Birds (18)
• Best bird pics from Ecuador (13)
• Hoatzin (3)
• Dark-backed Wood-Quail (3)
• Raptors (9)
• Great Potoo (3)
• Trogons and Quetzals (8)
• Brown Jacamar (2)
• Hummingbirds (44)
• Andean Cock-of-the-Rock lek at San Rafael (10)
• Cotingas and Flycatchers (21)
• Swallows through Thrushes (10)
• Tanagers and Allies (10)
• Sparrows and Finches (8)
• Other Fauna (0)
• Herptiles (4)
• Butterflies (9)
• Other Insects (3)
• Insect Nests (3)
• Monkeys (2)
• Centipedes (2)
• Spiders (2)
• Scenery (2)
• Angel Paz Antpitta Reserve (4)
• High Andes (3)
• Eastern Foothills of the Andes (6)
• Jatun Sacha Biological Station (5)
• Napo River and Gareno Lodge (10)
• Vines (3)
• People (24)
• Quetzal Reserve (10)
• Upper Unit (4)
• Lower Unit (28)
• Argentina 2007 (0)
• Scenes from Argentina (3)
• Birds of Mar Chiquita (9)
• Birds of Cordoba City and vicinity (14)
• Birds of Pampa de Achala (5)
• Mexico 2006 (7)
• Half Moon Bay State Park, San Mateo County, California (28)
• Mammals (57)
• Herptiles (13)
• Colorado Herps (27)
• Latin American Herps (17)
• Arthropods (22)
• Butterflies (0)
• USA (2)
• Butterflies of Colorado (53)
• Butterflies of Arizona (22)
• Butterflies of Missouri (16)
• South America (0)
• Butterflies of Ecuador (9)
• Mesoamerica (0)
• Butterflies of Mexico (5)
• Butterflies of Guatemala (31)
• Butterflies of El Salvador (2)
• Caterpillars (5)
• Dragonflies and Damselflies (11)
• Grasshoppers (6)
• Spiders (8)
• Colorado Landscapes (19)
• Alpine Tundra (18)
• Guatemala (0)
• Scenes from Guatemala (6)
• Habitats (7)
• Sitios (10)
• Birds Captured in Mist Nets (56)
• Free-ranging Birds (0)
• Best Bird Pics from Guatemala (11)
• April 2005 (2)
• March 2006 (15)
• June 2006 (5)
• August-September 2006 (11)
• December 2007 (38)
• December 2007 Solola (8)
• January 2009 (22)
• January 2009 Sacatepequez (11)
• Unidentified Vulture in El Progreso (12)
• July 2009 (20)
• July 2009 El Progreso (4)
• Confusing hummingbirds of Guatemala (0)
• Berylline or Blue-tailed? (11)
• Azure-crowned? (8)
• January 2010 (6)
• January 2010 Highlands (46)
• March 2015, Sacatepequez (22)
• Quetzal Foundation Photo Gifts (8)
• Quetzal Foundation art (2)
• cfo (0)