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Kingdom: Animalia - animals (153942)
Kingdom: Bacteria - bacteria (107)
Kingdom: Chromista - chromista (149)
Kingdom: Fungi - fungi (14740)
Kingdom: Plantae - plants (120762)
Kingdom: Protozoa - protozoa (469)
Kingdom: · Unknown - unknown (79)
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Phylum: Annelida - annelids, ringed worms, segmented worms (157)
Phylum: Arthropoda - arthropods (125704)
Phylum: Brachiopoda (7)
Phylum: Bryozoa (20)
Phylum: Chordata - vertebrates (24467)
Phylum: Cnidaria - cnidarians (83)
Phylum: Ctenophora - comb jellies (4)
Phylum: Echinodermata - echinoderms (42)
Phylum: Mollusca - molluscs, mollusks (3332)
Phylum: Nematoda (4)
Phylum: Nematomorpha (3)
Phylum: Platyhelminthes (31)
Phylum: Porifera - sponges (24)
Phylum: Rotatoria - rotifers, wheel animals (11)
Phylum: Tardigrada (1)
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Class: Actinopterygii - ray-finned fishes (749)
Class: Amphibia (2225)
Class: Ascidiacea - ascidians, sea squirts (6)
Class: Aves - Birds (15741)
Class: Cephalaspidomorphi - Lampreys (7)
Class: Chondrichthyes - Cartilaginous fishes (4)
Class: Mammalia (3035)
Class: Reptilia - Reptiles (2699)
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Order: Accipitriformes (1284)
Order: Anseriformes (1329)
Order: Apodiformes (34)
Order: Bucerotiformes (9)
Order: Caprimulgiformes (5)
Order: Charadriiformes (1589)
Order: Ciconiiformes (415)
Order: Coliiformes (1)
Order: Columbiformes (441)
Order: Coraciiformes (219)
Order: Cuculiformes (51)
Order: Falconiformes (206)
Order: Galliformes (111)
Order: Gaviiformes (36)
Order: Gruiformes (366)
Order: Otidiformes (4)
Order: Passeriformes (7548)
Order: Pelecaniformes (796)
Order: Phoenicopteriformes (9)
Order: Piciformes (657)
Order: Podicipediformes (234)
Order: Procellariiformes (2)
Order: Psittaciformes (12)
Order: Pterocliformes (4)
Order: Rheiformes (1)
Order: Sphenisciformes (2)
Order: Strigiformes - owls (223)
Order: Struthioniformes (1)
Order: Suliformes (11)
Order: Trogoniformes (1)
Order: Upupiformes (102)
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Family: Acrocephalidae (1)
Family: Aegithalidae (103)
Family: Alaudidae (132)
Family: Bombycillidae (68)
Family: Cardinalidae (5)
Family: Certhiidae (73)
Family: Cinclidae (17)
Family: Corvidae (712)
Family: Dicaeidae - Flowerpeckers (2)
Family: Dicruridae (2)
Family: Emberizidae (327)
Family: Eurylaimidae (1)
Family: Fringillidae (1029)
Family: Hirundinidae (237)
Family: Icteridae (33)
Family: Laniidae (412)
Family: Mimidae (7)
Family: Motacillidae (527)
Family: Muscicapidae (241)
Family: Nectariniidae - Sunbirds (9)
Family: Oriolidae (40)
Family: Paradoxornithidae (36)
Family: Paridae (516)
Family: Parulidae - New World warblers, wood-warblers (16)
Family: Passerellidae - New World sparrows, American sparrows (2)
Family: Passeridae (332)
Family: Ploceidae (3)
Family: Prunellidae (17)
Family: Pycnonotidae (15)
Family: Regulidae (71)
Family: Sittidae (113)
Family: Sturnidae (246)
Family: Sylviidae (714)
Family: Timaliidae (1)
Family: Troglodytidae (63)
Family: Turdidae (1415)
Family: Tyrannidae (2)
Family: Zosteropidae (1)
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Genus: Sitta (111)
Genus: Tichodroma (2)
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Species: carolinensis - white-breasted nuthatch (4)
Species: europaea - Eurasian nuthatch, wood nuthatch (107)
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