Order | Photos | Example |
Ostriches (Struthioniformes) | 7 | ![Common Ostrich Common Ostrich](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Ostrich_Bob%20Gress_TarangireNP_Tanzania%202_040114_5602.jpg)
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Rheas (Rheiformes) | 6 | ![Greater Rhea Greater Rhea](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Greater%20Rhea_BobGress_Pousada%20Piuval,%20Pantanal,%20Brazil_091719_4545.jpg)
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Tinamous (Tinamiformes) | 6 | ![Great Tinamou Great Tinamou](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Great_Tinamou_Bob_Gress_120522_5182_Tambopata_PE.jpg)
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Cassowaries, Emu (Casuariiformes) | 10 | ![Emu Emu](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Emu_Bob%20Gress_Queensland_Australia_100214_5687.jpg)
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Ducks, Geese & Swans (Anseriformes) | 725 | ![Horned Screamer Horned Screamer](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Horned_Screamer_Bob_Gress_Manu_NP,_Peru_090713_2434.jpg)
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Gallinaceous Birds (Galliformes) | 432 | ![Montezuma Quail Montezuma Quail](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Montezuma_Quail_Bob_Gress_12.jpg)
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Flamingos (Phoenicopteriformes) | 11 | ![Lesser Flamingo Lesser Flamingo](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Lesser%20Flamingo_Bob%20Gress_Arusha%20NP_Tanzania_041114_5294.jpg)
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Grebes (Podicipediformes) | 79 | ![Eared Grebe Eared Grebe](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Eared_Grebes_Bob_Gress_winter_and_breeding_MG_5229High_Island.jpg)
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Doves (Columbiformes) | 175 | ![Ruddy Ground Dove Ruddy Ground Dove](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Ruddy_Ground-Dove_071225_0502_AWNCL_Trinidad_Bob_Gress.jpg)
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Sandgrouse (Pterocliformes) | 10 | ![Black-faced Sandgrouse Black-faced Sandgrouse](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Black-faced%20Sandgrouse_Bob%20Gress_Tarangire%20NP_Tanzania_041214_6993.jpg)
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Bustards (Otidiformes) | 19 | ![White-bellied Bustard White-bellied Bustard](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/White-bellied%20Bustard_Bob%20Gress_Serengeti%20NP_Tanzania_040614_2069.jpg)
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Turacos (Musophagiformes) | 7 | ![White-bellied Go-away-bird White-bellied Go-away-bird](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/White-bellied%20Go-away-bird_Bob%20Gress_Tarangire%20NP_Tanzania_041314_7276.jpg)
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Cuckoos (Cuculiformes) | 92 | ![Groove-billed Ani Groove-billed Ani](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Groove-billed_Ani_Bob_Gress_080314_1739_Texas.jpg)
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Nightjars, Swifts, Hummingbirds & Allies (Caprimulgiformes) | 642 | ![Ruby-throated Hummingbird Ruby-throated Hummingbird](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Ruby-throated_Hummingbird_Bob_Gress_060819_4176_Kansas.jpg)
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Hoatzin (Opisthocomiformes) | 4 | ![Hoatzin Hoatzin](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Hoatzin_Bob_Gress_120523_5246_Tambopata_PE.jpg)
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Cranes, Rails & Allies (Gruiformes) | 254 | ![Purple Gallinule Purple Gallinule](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Purple_Gallinule_Bob_Gress_MG_8044_Anahuac_NWR_TX.jpg)
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Sandpipers, Plovers, Gulls & Terns (Charadriiformes) | 1113 | ![Ruddy Turnstone Ruddy Turnstone](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Ruddy_Turnstone_Bob_Gress_Galveston_Co_041913_0256.jpg)
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Sunbittern, Kagu (Eurypygiformes) | 8 | ![Sunbittern Sunbittern](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Sunbittern_Bob_Gress_Manu_NP,_Peru_090713_1955.jpg)
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Tropicbirds (Phaethontiformes) | 10 | ![Red-billed Tropicbird Red-billed Tropicbird](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Red-billed_Tropicbird_Bob_Gress_Tobago_121123_3206.jpg)
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Loons (Gaviiformes) | 21 | ![Common Loon Common Loon](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Common_Loon_Bob_Gress_060613_0110_Wisconsin.jpg)
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Penguins (Sphenisciformes) | 40 | ![Yellow-eyed Penguin Yellow-eyed Penguin](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Yellow-eyed_Penguin_Bob_Gress_NZ_1.jpg)
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Tube-nosed Seabirds (Procellariiformes) | 107 | ![Northern Fulmar Northern Fulmar](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Northern_Fulmar_Bob_Gress_1.jpg)
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Storks (Ciconiiformes) | 54 | ![Jabiru Jabiru](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Jabiru_Blue%20Creek,%20Belize_BobGress_110817_8357C.jpg)
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Frigatebirds, Boobies, Anhingas & Cormorants (Suliformes) | 184 | ![Neotropic Cormorant Neotropic Cormorant](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Neotropic_Cormorant_Bob_Gress_MG_5483_High_Island.jpg)
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Pelicans, Herons, Ibises & Allies (Pelecaniformes) | 410 | ![Hamerkop Hamerkop](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Hamerkop_Bob%20Gress_NgorongoroCA_Tanzania_040314_7797.jpg)
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New World Vultures (Cathartiformes) | 50 | ![Black Vulture Black Vulture](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Black_Vulture_Bob_Gress_080320_2314_Texas.jpg)
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Hawks, Eagles & Allies (Accipitriformes) | 319 | ![Broad-winged Hawk Broad-winged Hawk](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Broad-winged_Hawk_Bob_Gress_080712_4909.jpg)
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Owls (Strigiformes) | 204 | ![Eastern Screech-Owl Eastern Screech-Owl](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Eastern_Screech-Owl_Bob_Gress_100124_4919_Kansas.jpg)
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Mousebirds (Coliiformes) | 6 | ![Speckled Mousebird Speckled Mousebird](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Speckled%20Mousebird_Bob%20Gress_Arusha%20NP_Tanzania_041114_5185.jpg)
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Trogons, Quetzals (Trogoniformes) | 86 | ![Resplendent Quetzal Resplendent Quetzal](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Resplendent_Quetzal_Bob_Gress_C.R._MG_3240.jpg)
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Hoopoes, Hornbills & Allies (Bucerotiformes) | 25 | ![Northern Red-billed Hornbill Northern Red-billed Hornbill](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Northern%20Red-billed%20Hornbill_Bob%20Gress_TarangireNP_Tanzania_040114_5209.jpg)
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Motmots, Kingfishers, Rollers & Allies (Coraciiformes) | 144 | ![Lesson's Motmot Lesson's Motmot](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Blue-crowned_Motmot_Bob_Gress_C.R._MG_1490.jpg)
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Puffbirds, Jacamars (Galbuliformes) | 51 | ![Great Jacamar Great Jacamar](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Great_Jacamar_090121_7255_Panama_2009_photos_by_Bob_Gress.jpg)
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Woodpeckers & Allies (Piciformes) | 344 | ![Yellow-throated Toucan Yellow-throated Toucan](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Black-mandibled_Toucan_Bob_Gress_111128_6430_Selva_Verde_Lodge,_Costa_Rica.jpg)
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Seriemas (Cariamiformes) | 4 | ![Red-legged Seriema Red-legged Seriema](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Red-legged%20Seriema_BobGress_Pousada%20Piuval,%20Pantanal,%20Brazil_091719_4410.jpg)
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Caracaras, Falcons (Falconiformes) | 90 | ![Orange-breasted Falcon Orange-breasted Falcon](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Orange-breasted%20Falcon_Belize_BobGress_111017_1355C.jpg)
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Parrots (Psittaciformes) | 262 | ![Red-bellied Macaw Red-bellied Macaw](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Red-bellied_Macaw_071227_1031_AWNCL_Trinidad_Bob_Gress.jpg)
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Perching Birds (Passeriformes) | 4436 | ![Gray Gerygone Gray Gerygone](http://www.birdsinfocus.com/galleries/bob_gress/thumbnails/Gray%20Gerygone_Aroha%20Is.%20NZ_Bob%20Gress_7D_011917_7249.jpg)
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