• Falcinellus guarauna, ii. 109.
• —— igneus, ii. 109.
• Falco circumcinctus, ii. 73.
• —— communis, ii. 67,
• —— femoralis, ii. 69.
• —— fusco-cærulescens, ii. 69, 70.
• —— peregrinus, ii. 67.
• —— punctipennis, ii. 73.
• —— sparverius, ii. 99.
• Falcon, Peregrine, ii. 67.
• ——, Spot-winged, ii. 73.
• Fierce Tyrant, i. 156.
• Finch, Black-and-Chestnut Warbling, i. 49.
• ——, Black-headed, i. 45.
• ——, Blackish, i. 54.
• ——, Cardinal, i. 47.
• ——, Dark-crested, i. 48,
• ——, Diuca, i. 55.
• ——, Gay’s, i. 52.
• ——, Glaucous, i. 44.
• ——, Grey-headed, i. 53.
• ——, Indigo, i. 43.
• ——, Lesser Cardinal, i. 48.
• ——, —— Diuca, i. 56.
• ——, Long-tailed Reed-, i. 49.
• ——, Many-coloured Ground-, i. 61.
• ——, Marsh-, i. 45.
• ——, Meadow Seed-, i. 71.
• ——, Misto Seed-, i. 69.
• ——, Mourning, i. 54.
• ——, Olive Ground-, i. 63.
• ——, Plain-coloured, i. 57.
• ——, Pretty Warbling, i. 51.
• ——, Prince Max’s, i. 44.
• ——, Red-backed, i. 53.
• ——, Red-billed Ground-, i. 62.
• ——, Red-browed Warbling, i. 50.
• ——, Red-crested, i. 48.
• ——, Red-flanked Warbling, i. 51.
• ——, Red-stained, i. 57.
• ——, Ringed Warbling, i. 51.
• ——, Screaming, i. 46.
• ——, Slaty, i. 53.
• ——, Wedge-tailed Ground-, i. 63.
• ——, White-and-grey Warbling, i. 52.
• ——, White’s Ground-, i. 64.
• ——, White’s Warbling, i. 50.
• ——, Yellow Seed-, i. 69.
• Firewood Gatherer, i. 189.
• Flamingo, Andean, ii. 119.
• ——, Argentine, ii. 117.
• Flat-billed Wood-hewer, i. 199.
• Flauta del Sol, ii. 100.
• Florida cærulea, ii. 99.
• Fluvicola albiventris, i. 121.
• Fly-snapper, Brush-loving, i. 12.
• Forked-tail Pipit, i. 19.
• Fork-tailed Goatsucker, ii. 15.
• Four-coloured Tanager, i. 40.
• Fulica armillata, ii. 157.
• —— leucoptera, ii. 158.
• —— leucopyga, ii. 157.
• Fulvous Tree-Duck, ii. 126.
• Furnarius figulus, i. 170.
• —— rufus, i. 27, 119, 167; ii. 80.
• —— tricolor, i. 170; ii. 223.

• Gallina ciega, ii. 12.
• Gallinago paraguaiæ, ii. 178.
• Gallinazo, ii. 90.
• Gallineta, ii. 151.
• Gallinula galeata, ii. 156.
• Gallito, i. 206.
• ——, Brown, i. 207.
• Gambetta flavipes, ii. 187.
• —— melanoleuca, ii. 186.
• Ganso, ii. 126.
• Garza jaspeada, ii. 104.
• Garzetta candidissima, ii. 99.
• Gaviota, ii. 199.
• Gay’s Finch, i. 52.
• Geobamon rufipennis, ii. 166, 226.
• Geositta cunicularia, i. 33, 68, 165, 171.
• —— tenuirostris, i. 165.
• Geothlypis velata, i. 20.
• Geranoaëtus melanoleucus, ii. 64.
• Geranospiza cærulescens, ii. 67.
• Geranospizias cærulescens, ii. 67.
• Geronticus melanopis, ii. 110.
• Giant Humming-bird, ii. 4.
• Glaucidium nanum, ii. 56.
• Glaucous Finch, i. 44.
• Glittering Humming-bird, ii. 9.
• Glyphorhynchus cuneatus, i. 199.
• Goatsucker, Fork-tailed, ii. 15.
• ——, Little, ii. 14.
• ——, Nacunda, ii. 12.
• ——, Short-winged, ii. 16.
• ——, White-banded, ii. 14.
• Godwit, Hudsonian, ii. 191.
• Gold-backed Woodpecker, ii. 21.
• Golden-crowned Wood-singer, i. 21.
• Golden Plover, American, ii. 170.
• Golden-tailed Humming-bird, ii. 8.
• Golondrina domestica, i. 26.
• Goose, Andean, ii. 122.
• ——, Ashy-headed, ii. 124.
• ——, Barred Upland, ii. 123.
• Great Condor, ii. 90.
• —— Grebe, ii. 202.
• —— Tern, ii. 195.
• —— Tinamou, ii. 209.
• Great-billed Tern, ii. 194.
• Greater Yellowshank, ii. 186.
• Grebe, Bright-cheeked, ii. 204.
• ——, Great, ii. 202.
• ——, Rolland’s, ii. 204.
• ——, Thick-billed, ii. 206.
• Green Parrakeet, ii. 43.
• Greenish Tyrant, i. 146.
• Greenlet, Chivi, i. 22.
• Greenlet-Shrike, Deep-billed, i. 24.
• Greenlet, Ochre-headed, i. 23.
• Grey-capped Gull, ii. 201.
• Grey Crane-Hawk, ii. 67.
• —— Eagle, ii. 64.
• —— Teal, ii. 131.
• Grey-eyed Tyrant, i. 147.
• Grey-headed Finch, i. 53.
• Greyish Saltator, i. 42.
• Ground-Finch, Many-coloured, i. 61.
• ——, Olive, i. 63.
• ——, Red-billed, i. 62.
• ——, Wedge-tailed, i. 63.
• ——, White’s, i. 64.
• Guan, Dark, ii. 146.
• ——, Hoary-necked, ii. 147.
• ——, White-headed, ii. 146.
• Gubernatrix cristatella, i. 55.
• Guira Cuckoo, ii. 32.
• —— piririgua, ii. 32.
• Guira-pitá, i. 153.
• Guira-yetapá, i. 123.
• Guiraca cyanea, i. 43.
• —— —— argentina, i. 43.
• —— glaucocærulea, i. 44.
• Gull, Dominican, ii. 197.
• ——, Grey-capped, ii. 201.
• ——, Spot-winged, ii. 198.

• Habia de bañado, i. 62.
• —— verde, i. 24.
• Habrura minima, i. 138.
• —— pectoralis, i. 138.
• Hæmatopus ater, ii. 176.
• —— palliatus, ii. 176.
• Hæmophila whitii, i. 64.
• Half-black Siskin, i. 65.
• Haliaëtus melanoleucus, ii. 64.
• Haliæus brasilianus, ii. 91.
• Hang-nest, Chestnut-shouldered, i. 107.
• Hapalocercus flaviventris, i. 80, 137.
• Harpiprion cærulescens, ii. 112.
• Harpy, Crowned, ii. 66.
• Harpyhaliaëtus coronatus, ii. 66.
• Harrier, Cinereous, ii. 57.
• ——, Long-winged, ii. 58.
• Hawk, Carancho Carrion-, ii. 81.
• ——, Chimango Carrion-, ii. 74.
• ——, Grey Crane-, ii. 67.
• ——, Pucheran’s, ii. 58.
• ——, Sociable Marsh-, ii. 72.
• Heleothreptus anomalus, ii. 16.
• Heliomaster angelæ, ii. 5, 229.
• —— furcifer, ii. 5.
• Hemiiërax circumcinctus, ii. 73.
• Hemiprocne zonaris, ii. 11.
• Henicornis, Dark-tailed, i. 173.
• —— phœnicurus, i. 173.
• Herodias egretta, ii. 98.
• Heron, Blue, ii. 99.
• ——, Cocoi, ii. 93.
• ——, Dark Night-, ii. 105.
• ——, Little Blue, ii. 101.
• ——, Variegated, ii. 101.
• ——, Whistling, ii. 100.
• Heteronetta melanocephala, ii. 130.
• Heterospizias meridionalis, ii. 63.
• Himantopus brasiliensis, ii. 178, 179.
• —— nigricollis, ii. 179.
• Hirundinea bellicosa, i. 151.
• Hirundo leucorrhoa, i. 30.
• Hoary-necked Guan, ii. 147.
• Hobby, Orange-chested, ii. 69.
• Homorus gutturalis, i. 197.
• —— lophotes, i. 195.
• —— unirufus, i. 195.
• Hornero, i. 167.
• House-Sparrow, Yellow, i. 66.
• House-Wren, Brown, i. 13.
• Hudsonian Godwit, ii. 191.
• Hudson’s Black Tyrant, i. 126.
• —— Spine-tail, i. 186.
• Humming-bird, Angela, ii. 5.
• ——, Burmeister’s, ii. 2.
• ——, Giant, ii. 4.
• ——, Glittering, ii. 9.
• ——, Golden-tailed, ii. 8.
• ——, Red-throated, ii. 8.
• ——, Sappho, ii. 3.
• ——, Violet-eared, ii. 3.
• ——, White-breasted, ii. 7.
• ——, White-sided, ii. 1.
• ——, White-throated, ii. 7.
• Hydropsalis furcifera, ii. 15.
• —— psalurus, ii. 15.
• —— torquata, ii. 15.
• Hylocharis bicolor, ii. 9.
• —— sapphirina, ii. 1, 6, 8.
• Hylophilus pœcilotis, i. 23.
• Hypotriorchis femoralis, ii. 69.

• Ibis albicollis, ii. 110.
• ——, Black-faced, ii. 110.
• —— cærulescens, ii. 112.
• —— chalcoptera, ii. 109.
• —— falcinellus, ii. 109.
• —— infuscata, ii. 113.
• —— plumbea, ii. 112.
• ——, Plumbeous, ii. 112.
• ——, Whispering, ii. 113.
• ——, White-faced, ii. 109.
• ——, Wood-, ii. 108.
• Ibycter chimango, ii. 74.
• Icterus-pyrrhopterus, i. 73, 107.
• Indigo Finch, i. 43.

• Jabiru, ii. 106.
• Jacana, Common, ii. 163.
• Jackass Penguin, ii. 206.
• Jassana, ii. 163.
• Jay, Azure, i. 110.
• ——, Urraca, i. 110.

• Keanché, ii. 82.
• Kestrel, Cinnamomeous, ii. 69.
• Kingfisher, Amazonian, ii. 27.
• ——, Little, ii. 27.
• ——, Ringed, ii. 26.
• Kite, White-tailed, ii. 71.

• Lake-Duck, Rusty, ii. 138.
• ——, White-winged, ii. 138.
• Lanius ludovicianus excubitoroides, ii. 60.
• Lapwing, Cayenne, ii. 165, 166.
• Larger Bush-bird, i. 203.
• Lark-like Coryphistera, i. 188.
• Larus cirrhocephalus, ii. 198, 201.
• —— dominicanus, ii. 197.
• —— glaucodes, ii. 198.
• —— maculipennis, ii. 198, 201, 202.
• —— serranus, ii. 198.
• —— vociferus, ii. 197.
• La Saria, ii. 161.
• Leach’s Bush-bird, i. 202.
• Leaf-scraper, Spiny, i. 174.
• Lechuzon, ii. 49.
• Leistes anticus, i. 102.
• —— superciliaris, i. 100.
• Leñatero, i. 31, 189.
• Lepidocolaptes atripes, i. 201.
• Leptasthenura ægithaloides, i. 177; ii. 19.
• —— fuliginiceps, i. 177.
• Leptopogon tristis, i. 144.
• Leptoptila chalcauchenia, ii. 144.
• —— megalura, ii. 144.
• Lesser Cardinal Finch, i. 48.
• —— Diuca Finch, i. 56.
• —— Yellowshank, ii. 187.
• Leucippus chionogaster, ii. 7.
• Leucochloris albicollis, ii. 7.
• Leuconerpes candidus, ii. 23.
• Lichenops erythropterus, i. 129.
• —— perspicillatus, i. 124, 126, 127, 129.
• Limnornis curvirostris, i. 185, 191.
• Limosa hæmastica, ii. 191.
• —— hudsonica, ii. 191.
• —— lapponica, ii. 191.
• Lindo, i. 38.
• —— azul y oro cabeza celeste, i. 37.
• Little Blue Heron, ii. 101.
• —— Brown Tyrant, i. 151.
• —— Cock, i. 206.
• —— Goatsucker, ii. 14.
• —— Kingfisher, ii. 27.
• —— Turtle-Dove, ii. 143.
• —— Waterhen, ii. 156.
• Lochmias, Brazilian, i. 174.
• —— nematura, i. 174.
• Long-billed Woodpecker, ii. 23.
• Long-tailed Manikin, i. 161.
• —— Reed-Finch, i. 49.
• —— Tyrant, i. 139.
• Long-winged Harrier, ii. 58.
• Lophospingus pusillus, i. 48.
• Lophospiza pusilla, i. 48.

• Macás cornudo, ii. 203.
• Macasíto, ii. 205.
• Machetornis rixosa, i. 84, 85, 131.
• Magellanic Thrush, i. 3.
• Maguari Stork, ii. 106.
• Manduria, ii. 112.
• Mandurria ó curucáu, ii. 111.
• Manea-cola, i. 166.
• Manikin, Long-tailed, i. 161.
• Many-coloured Ground-Finch, i. 61.
• —— Tyrant, i. 142.
• Marbled Tiger-Bittern, ii. 104.
• Mareca chiloensis, ii. 135.
• —— sibilatrix, ii. 135.
• Marked Crake, ii. 155.
• Marsh-bird, Red-breasted, i. 100.
• ——, Red-headed, i. 99.
• ——, Scarlet-headed, i. 101.
• ——, Yellow-breasted, i. 102.
• ——, Yellow-headed, i. 98.
• ——, Yellow-shouldered, i. 97.
• Marsh-Finch, i. 45.
• Marsh-Hawk, Sociable, ii. 72.
• Marsh-Starling, De Filippi’s, i. 105.
• ——, Patagonian, i. 104.
• Marsh-Wren, Platan, i. 15.
• Martin, Brown, i. 35.
• ——, Domestic, i. 25.
• ——, Purple, i. 24.
• ——, Red-backed Rock-, i. 30.
• ——, Tree-, i. 26.
• Martineta Tinamou, ii. 214.
• Maximilian’s Parrot, Prince, ii. 47.
• Max’s Finch, Prince, i. 44.
• Meadow Seed-Finch, i. 71.
• Megaceryle torquata, ii. 26.
• Melancholy Tyrant, i. 158.
• Merlo, i. 4.
• Merula fuscatra, i. 4.
• Metopiana peposaca, ii. 137.
• Metriopelia aymara, ii. 142, 228.
• —— melanoptera, ii. 142.
• Milvago chimango, i. 81; ii. 57, 74, 82.
• —— pezoporus, ii. 74.
• Milvulus tyrannus, i. 160; ii. 77.
• —— violentus, i. 75.
• Mimus calandria, i. 5, 9.
• —— modulator, i. 5, 7.
• —— patagonicus, i. 7, 79.
• —— thenca, i. 1, 7.
• —— triurus, i. 2, 8.
• Miner, Common, i. 165.
• ——, Red-winged, i. 166.
• Minera, i. 33, 166.
• Minto Seed-Finch, i. 69.
• Mitu, El, ii. 145.
• Mocking-bird, Calandria, i. 5.
• ——, Patagonian, i. 7.
• ——, White-banded, i. 8.
• Modest Spine-tail, i. 183.
• Molina’s Parrot, ii. 43.
• Molothrus badius, i. 84, 86, 87, 88, 91, 92, 93, 95, 104.
• —— bonariensis, i. 18, 72, 74, 75, 78, 79, 81, 82, 83, 84, 85, 86, 88, 91, 92, 93, 154.
• —— pecoris, i. 72, 74, 86.
• —— rufoaxillaris, i. 86, 91, 92, 93, 95, 104.
• —— sericeus, i. 72.
• Molú Chueké, ii. 219.
• Molybdophanes cærulescens, ii. 112.
• Mourning Finch, i. 54.
• Mouse-brown Tyrant, i. 119.
• Muscicapara viridicata, i. 146.
• Muscisaxicola macloviana, i. 133.
• —— maculirostris, i. 134.
• —— mentalis, i. 133, 134.
• —— rufivertex, i. 134.
• Muscovy Duck, ii. 129.
• Mycteria americana, ii. 106.
• Myiarchus atriceps, i. 157; ii. 223.
• —— erythrocercus, i. 156.
• —— fasciatus, i. 126; ii. 227.
• —— ferocior, i. 156; ii. 223.
• —— ferox, i. 156, 157.
• —— tyrannulus, i. 156, 157.
• Myiobius nævius, i. 151.
• Myiodynastes solitarius, i. 150.
• Myiotheretes rufiventris, i. 82, 112, 114, 117; ii. 76.

• Ñacundá, ii. 12.
• —— Goatsucker, ii. 12.
• Ñacurutú, ii. 51.
• Nandú, ii. 216.
• Narrow-billed Wood-hewer, i. 201.
• Narrow-tailed Tyrant, i. 139.
• Nasica gracilirostris, i. 199.
• Night-Heron, Dark, ii. 105.
• Noctua cunicularia, ii. 52.
• Noisy Tyrant, i. 145.
• Nomonyx dominicus, ii. 138.
• Nothoprocta cinerascens, ii. 210.
• —— doeringi, ii. 210, 223.
• —— pentlandi, ii. 210, 211.
• Nothura cinerascens, ii. 210.
• —— darwini, ii. 213.
• —— maculosa, ii. 211, 213, 214.
• —— major, ii. 211.
• —— minor, ii. 213.
• —— perdicaria, ii. 213.
• Numenius borealis, ii. 192.
• Nycticorax gardeni, ii. 105.
• —— obscurus, ii. 98, 99, 105.

• Ochetorhynchus dumetorius, i. 170.
• —— luscinia, i. 171.
• —— ruficauda, i. 171.
• Ochre-headed Greenlet-Shrike, i. 23.
• Ochthœca leucophrys, i. 121.
• Œnops aura, ii. 89.
• Oily-green Anabazenops, i. 198.
• Olive Ground-Finch, i. 63.
• One-banded Buzzard, ii. 63.
• Orange-chested Hobby, ii. 69.
• Oreophilus ruficollis, ii. 174.
• —— totanirostris, ii. 174.
• Oreotrochilus leucopleurus, ii. 1.
• Ornismya angelæ, ii. 5.
• —— aureoventris, ii. 9.
• Orospina pratensis, i. 71; ii. 223.
• Ortalida canicollis, ii. 147.
• —— guttata, ii. 147.
• Ortalis canicollis, ii. 147.
• Ortygometra melanops, ii. 156.
• Oryzoborus maximiliani, i. 44.
• Ostrich, ii. 216.
• Otus brachyotus, ii. 49.
• —— palustris, ii. 49.
• Oven-bird, Crested, i. 170.
• ——, Red, i. 167.
• Owl, Burrowing, ii. 52.
• ——, Choliba, ii. 51.
• ——, Common Barn-, ii. 48.
• ——, Pygmy, ii. 56.
• ——, Short-eared, ii. 49.
• ——, Virginian, ii. 50.
• Oyster-catcher, American, ii. 176.

• Pachyrhamphus albescens, i. 146.
• —— albinucha, ii. 222.
• —— minimus, i. 138.
• —— polychropterus, i. 162.
• Painted Snipe, ii. 182.
• Pajaro ardilla, ii. 37.
• —— Negro, i. 72.
• —— Niño, ii. 207.
• Palamedea chavaria, ii. 119.
• Pampas Woodpecker, ii. 24.
• Paraguay Snipe, ii. 181.
• Paroaria capitata, i. 48.
• —— cucullata, i. 47.
• Parra jacana, ii. 163.
• Parrakeet, Aymara, ii. 46.
• ——, Green, ii. 43.
• ——, Red-billed, ii. 46.
• Parrot, Bank, ii. 41.
• ——, Burrowing, ii. 41.
• ——, Molina’s, ii. 43.
• ——, Patagonian, ii. 41.
• ——, Prince Maximilian’s, ii. 47.
• ——, Red-headed, ii. 43.
• ——, Sharp-tailed, ii. 42.
• Parula pitiayumi, i. 20.
• Patagiœnas maculosa, ii. 139.
• Patagona gigas, ii. 1, 4, 5.
• Patagonian Earth-Creeper, i. 170.
• —— Marsh-Starling, i. 104.
• —— Mocking-bird, i. 7.
• —— Parrot, ii. 41.
• —— Sand-Plover, ii. 172.
• —— Song-Sparrow, i. 59.
• —— Spine-tail, i. 186.
• Pato ceja blanca, ii. 132.
• —— collar negro, ii. 132.
• —— creollo, ii. 129.
• —— overo, ii. 136.
• —— picaso, ii. 136.
• —— Portugues, ii. 133.
• —— real, ii. 129.
• —— silvon, ii. 127.
• Pavo del Monte, ii. 146.
• Pearly-bellied Tyrant, i. 136.
• Pecho-amarillo, i. 102.
• —— colorado, i. 106.
• Pectoral Sandpiper, ii. 183, 184.
• Penelope boliviana, ii. 146.
• —— canicollis, ii. 147.
• —— obscura, ii. 146.
• —— pileata, ii. 146.
• —— pipile, ii. 146.
• Penguin, Jackass, ii. 206.
• Pentland’s Tinamou, ii. 210.
• Pepoazá, i. 114.
• —— Tyrant, i. 114.
• Perdiz chico, ii. 214.
• —— comun, ii. 211.
• —— grande, ii. 209.
• Peregrine Falcon, ii. 67.
• Peristera frontalis, ii. 144.
• Petasophora crispa, ii. 3.
• —— serrirostris, ii. 3, 8.
• Petrochelidon pyrrhonota, i. 26, 30.
• Phacellodomus frontalis, i. 192.
• —— maculipectus, i. 194; ii. 223.
• —— ruber, i. 184, 194, 195.
• —— sibilatrix, i. 192, 195.
• —— sincipitalis, i. 192, 193; ii. 223.
• —— striaticollis, i. 194.
• Phaëthusa magnirostris, ii. 194.
• Phalacrocorax albiventris, ii. 92.
• —— brasilianus, ii. 91.
• —— imperialis, ii. 92.
• Phalarope, Wilson’s, ii. 180, 181.
• Phalaropus wilsoni, ii. 180.
• Pheucticus aureiventris, i. 43.
• Philomachus cayanus, ii. 165.
• Phimosus infuscatus, ii. 113.
• Phlœocryptes melanops, i. 174.
• Phloeotomus schulzi, ii. 18, 223.
• Phœnicopterus andinus, ii. 117, 119, 222.
• —— ignipalliatus, ii. 117, 119, 222.
• —— jamesi, ii. 117.
• Pholeoptynx cunicularia, ii. 48, 52, 227.
• Phrygilus caniceps, i. 53.
• —— carbonarius, i. 54.
• —— dorsalis, i. 53; ii. 223.
• —— fruticeti, i. 54, 55; ii. 142.
• —— gayi, i. 52.
• —— ornatus, i. 51; ii. 227.
• —— rusticus, i. 53.
• —— unicolor, i. 53.
• Phylloscartes flavo-cinereus, i. 139.
• —— ventralis, i. 137.
• Phytotoma rutila, i. 164.
• Piaya cayana, ii. 36.
• Pica de punza azul y canela, i. 37.
• Picaflor cola de topacio, ii. 8.
• Picazuro Pigeon, ii. 139.
• Pico de Plata, i. 129.
• Picolaptes angustirostris, i. 201.
• Picui Dove, ii. 143.
• Picus cactorum, ii. 19, 20.
• —— mixtus, ii. 19.
• Pigeon, Picazuro, ii. 139.
• ——, Solitary, ii. 144.
• ——, Spot-winged, ii. 140.
• Pintail, Bahama, ii. 135.
• ——, Brown, ii. 134.
• Pionus maximiliani, ii. 47.
• Pipile cumanensis, ii. 146.
• Pipit, Cachila, i. 17.
• ——, Forked-tail, i. 19,
• Pipridea melanonota, i. 37.
• Piririgua, ii. 32.
• Pitangus bellicosus, i. 82, 147, 154.
• —— bolivianus, i. 147.
• Pitiayume, i. 20.
• Pitiayumi Wood-singer, i. 20.
• Piuquen, ii. 123.
• Plain-coloured Finch, i. 57.
• Plant-cutter, Red-breasted, i. 164.
• Platalea ajaja, ii. 114, 115, 117.
• Platan Marsh-Wren, i. 15.
• Platyrhynchus mystaceus, i. 136.
• Plegadis falcinellus, ii. 109.
• —— guarauna, ii. 109.
• Plover, American Golden, ii. 170.
• ——, Azara’s Sand-, ii. 173.
• ——, Cinereous, ii. 173.
• ——, Patagonian Sand-, ii. 172.
• ——, Slender-billed, ii. 174, 175.
• ——, Winter, ii. 171, 172.
• Plumbeous Ibis, ii. 112.
• —— Rail, ii. 150.
• Podager nacunda; ii. 12.
• Podiceps bicornis, ii. 202.
• —— caliparæus, ii. 204.
• —— chilensis, ii. 203.
• —— dominicus, ii. 205.
• —— major, ii. 203, 205.
• —— rollandi, ii. 204, 205.
• Podilymbus antarcticus, ii. 206.
• —— podiceps, ii. 206.
• Polioptila dumicola, i. 12.
• Polyborus brasiliensis, ii. 81.
• —— tharus, ii. 65, 74, 81.
• —— vulgaris, ii. 81.
• Poospiza albifrons, i. 49.
• —— assimilis, i. 51.
• —— erythrophrys, i. 50; ii. 229.
• —— lateralis, i. 51.
• —— melanoleuca, i. 52.
• —— nigrorufa, i. 49.
• —— ornata, i. 51.
• —— thoracica, i. 51.
• —— torquata, i. 51.
• —— whitii, i. 50.
• Porphyriops melanops, ii. 156.
• Porzana leucopyrrha, ii. 154.
• —— notata, ii. 155.
• —— salinasi, ii. 155.
• —— spilonota, ii. 155.
• —— spiloptera, ii. 155, 225.
• Pretty-throated Spine-tail, i. 181.
• —— Warbling Finch, i. 51.
• Prince Maximilian’s Parrot, ii. 47.
• —— Max’s Finch, i. 44.
• Progne chalybea, i. 25.
• —— domestica, i. 25.
• —— furcata, i. 24, 25.
• —— purpurea, i. 24.
• —— tapera, i. 26, 85.
• Psarocolius unicolor, i. 108.
• Pseudoleistes virescens, i. 76, 97, 102.
• Psittacus amazonicus, ii. 47.
• Pterocnemis darwini, ii. 219.
• Pterocyanea cyanoptera, ii. 130.
• Pteroptochus albicollis, i. 207.
• Ptiloleptis guira, ii. 32.
• Ptyonura maculirostris, i. 134.
• Pucheran’s Hawk, ii. 58.
• Puff-bird, Spotted, ii. 30.
• Purple Martin, i. 24.
• Purple-and-Yellow Tanager, i. 37.
• Purple-breasted Trogon, ii. 29.
• Pygmy Owl, ii. 56.
• Pyranga azaræ, i. 40.
• —— coccinea, i. 40.
• —— saira, i. 40.
• Pyrocephalus parvirostris, i. 152.
• —— rubescens, i. 138.
• —— rubineus, i. 111, 152; ii. 227.

• Quarhi-rahi, i. 153.
• Queltregue, ii. 166.
• Querquedula brasiliensis, ii. 45, 133.
• —— cyanoptera, ii. 130.
• —— flavirostris, ii. 131.
• —— maculirostris, ii. 131.
• —— torquata, ii. 132.
• —— versicolor, ii. 131.

• Rail, Antarctic, ii. 148.
• ——, Black, ii. 149.
• ——, Plumbeous, ii. 150.
• ——, Spotted, ii. 148.
• ——, Ypecaha, ii. 150.
• Rallus antarcticus, ii. 148.
• —— maculatus, ii. 148.
• —— nigricans, ii. 149, 150.
• —— rhytirhynchus, ii. 149, 150.
• —— salinasi, ii. 155.
• Red Duck, ii. 137.
• —— Oven-bird, i. 167.
• —— Shoveller, ii. 136.
• —— Thorn-bird, i. 194.
• Red-and-White Crake, ii. 154.
• Red-backed Buzzard, ii. 62.
• —— Finch, i. 53.
• —— Rock-Martin, i. 30.
• —— Tyrant, i. 134.
• Red-bellied Thrush, i. 3.
• Red-billed Ground-Finch, i. 62.
• —— Parrakeet, ii. 46.
• Red-breasted Marsh-bird, i. 100.
• —— Plant-cutter, i. 164.
• Red-browed Warbling Finch, i. 50.
• Red-capped Bush-bird, i. 204.
• —— Tanager, i. 40.
• Red-crested Finch, i. 48.
• —— Woodpecker, ii. 21.
• Red-faced Woodpecker, ii. 18.
• Red-flanked Song-Sparrow, i. 60.
• —— Warbling Finch, i. 51.
• Red-fronted Coot, ii. 157.
• —— Thorn-bird, i. 192.
• —— Woodpecker, ii. 20.
• Red-gartered Coot, ii. 157.
• Red-headed Marsh-bird, i. 99.
• —— Parrot, ii. 43.
• Red-necked Swallow, i. 36.
• Red-stained Finch, i. 57.
• Red-tailed Earth-Creeper, i. 171.
• Red-throated Humming-bird, ii. 8.
• —— Tyrant, i. 136.
• Red-topped Tyrant, i. 134.
• Red-winged Miner, i. 166.
• Red-winged Thorn-bird, i. 194.
• Reed-Finch, Long-tailed, i. 49.
• Reed-Tyrant, i. 137.
• Reed-Wren, Black-headed, i. 13.
• Rey de los Pajaros, ii. 73.
• Rhamphastos toco, ii. 40.
• Rhea americana, ii. 216, 220.
• ——, Common, ii. 216.
• —— darwini, ii. 219.
• ——, Darwin’s, ii. 219.
• Rhinocrypta fusca, i. 207.
• —— lanceolata, i. 206.
• Rhinogryphus aura, ii. 89.
• Rhyacophilus solitarius, ii. 188.
• Rhynchæa hilarii, ii. 182.
• —— semicollaris, ii. 179, 182.
• Rhynchocyclus sulphurescens, i. 147.
• Rhynchops melanura, ii. 193.
• —— nigra, ii. 193.
• Rhynchotus pentlandii, ii. 210.
• —— punctulatus, ii. 210.
• —— rufescens, ii. 50, 209, 214.
• Ringed Kingfisher, ii. 11.
• —— Spine-tailed Swift, ii. 11.
• —— Warbling Finch, i. 51.
• Ring-necked Teal, ii. 132.
• Robin-like Wood-hewer, i. 198.
• Rock-Martin, Red-backed, i. 30.
• Rolland’s Grebe, ii. 204.
• Roseate Spoonbill, ii. 114.
• Rostrhamus hamatus, ii. 72.
• —— leucopygus, ii. 72.
• —— sociabilis, ii. 72.
• Rosy-billed Duck, ii. 137.
• Rufous Cheese-bird, i. 163.
• Ruisiñor luscinia, i. 172.
• Rush-bird, Curved-bill, i. 191.
• Rush-loving Spine-tail, i. 174.
• Rusty Lake-Duck, ii. 138.
• Rusty-tailed Tyrant, i. 156.

• Saltator, Allied, i. 41.
• —— aurantiirostris, i. 42.
• —— cærulescens, i. 42.
• ——, Greyish, i. 42.
• —— similis, i. 41.
• —— superciliaris, i. 41.
• ——, Yellow-billed, i. 42.
• Saltatricula multicolor, i. 61.
• Sanderling, ii. 186.
• Sandpiper, Baird’s, ii. 184, 185.
• ——, Bartram’s, ii. 189.
• ——, Bonaparte’s, ii. 185.
• ——, Buff-breasted, ii. 190.
• ——, Pectoral, ii. 183, 184.
• ——, Solitary, ii. 188.
• Sand-Plover, Azara’s, ii. 173.
• ——, Patagonian, ii. 172.
• Sangre de Toro, i. 152.
• —— Pura, i. 152.
• Sappho Humming-bird, ii. 3.
• —— sparganura, ii. 3.
• Sarcidiornis carunculata, ii. 128.
• —— regia, ii. 128.
• Sarcorhamphus gryphus, ii. 90.
• Saria, La, ii. 161.
• Saurophagus sulphuratus, i. 147.
• Sayornis cineracea, i. 121.
• Scarlet Tyrant, i. 152.
• Scarlet-headed Marsh-bird, i. 101.
• Schulz’s Dipper, i. 11.
• —— Woodpecker, ii. 18.
• Scissor-bill, ii. 193.
• Scissor-tail Tyrant, i. 160.
• Sclater’s Curassow, ii. 145.
• Sclerurus caudacutus, i. 174.
• —— umbretta, i. 174.
• Scolopax frenata, ii. 181.
• —— —— magellanica, ii. 181.
• Scops brasilianus, ii. 51.
• Screamer, Crested, ii. 119.
• Screaming Cow-bird, i. 86.
• —— Finch, i. 46.
• Scytalopus indigoticus, i. 205.
• —— superciliaris, i. 205; ii. 223.
• ——, White-eyebrowed, i. 205.
• Seed-Finch, Meadow, i. 71.
• ——, Misto, i. 69.
• ——, Yellow, i. 69.
• Seed-Snipe, Common, ii. 176.
• ——, D’Orbigny’s, ii. 178.
• Seriema, ii. 161.
• Serpophaga nigricans, i. 141.
• —— subcristata, i. 140, 141, 142.
• Setophaga brunneiceps, i. 21.
• Sharp-tailed Parrot, ii. 42.
• Short-billed Tyrant, i. 155.
• Short-eared Owl, ii. 49.
• Short-footed Tyrant, i. 156.
• Short-winged Goatsucker, ii. 16.
• —— Tyrant, i. 131.
• Shoveller, Red, ii. 136.
• Shrike, Deep-billed Greenlet-, i. 24.
• ——, Ochre-headed Greenlet-, i. 23.
• Silver-bill Tyrant, i. 129.
• Siskin, Black-headed, i. 64.
• ——, Half-black, i. 65.
• Sisopygis icterophrys, i. 76, 125.
• Sittosomus erithacus, i. 198.
• —— olivaceus, i. 198.
• Skimmer, Black-tailed, ii. 193.
• Slaty Finch, i. 53.
• Slaty-blue Bush-bird, i. 204.
• Slender-billed Plover, ii. 174, 175.
• Small-crested Tyrant, i. 140.
• Snipe, Common Seed-, ii. 176.
• ——, D’Orbigny’s Seed-, ii. 178.
• ——, Painted, ii. 182.
• ——, Paraguay, ii. 181.
• Snowy Egret, ii. 99.
• Sociable Marsh-Hawk, ii. 72.
• Solitary Cassique, i. 72.
• —— Pigeon, ii. 144.
• —— Sandpiper, ii. 188.
• —— Tyrant, i. 150.
• Song-Sparrow, Chingolo, i. 58.
• ——, Patagonian, i. 59.
• ——, Red-flanked, i. 60.
• ——, Stripe-headed, i. 60.
• ——, Yellow-shouldered, i. 60.
• Sordid Spine-tail, i. 184.
• Sorry Tyrant, i. 144.
• Southern Courlan, ii. 159.
• Sparganura sappho, ii. 3.
• Sparrow, Common Song-, i. 58.
• ——, Patagonian Song-, i. 59.
• ——, Red-flanked Song-, i. 60.
• ——, Stripe-headed Song-, i. 60.
• ——, Yellow House-, i. 66.
• ——, Yellow-shouldered Song-, i. 60.
• Spatula platalea, ii. 136.
• Speotyto cunicularia, ii. 52.
• Spermophila analis, i. 57.
• —— cærulescens, i. 46, 79.
• —— inornata, i. 57.
• —— melanocephala, i. 45.
• —— palustris, i. 45.
• —— rufirostris, i. 57.
• Spheniscus magellanicus, ii. 206, 207.
• Spine-tail, Brown-crested, i. 177.
• ——, Brown-fronted, i. 178.
• ——, D’Orbigny’s, i. 183.
• ——, Eyebrowed, i. 178.
• ——, Hudson’s, i. 186.
• ——, Modest, i. 183.
• ——, Patagonian, i. 186.
• ——, Pretty-throated, i. 181.
• ——, Rush-loving, i. 174.
• ——, Sordid, i. 184.
• ——, Spix’s, i. 179.
• ——, Striped, i. 182.
• ——, Tit-like, i. 177.
• ——, White’s, i. 181.
• ——, White-throated, i. 179.
• ——, Wren-like, i. 188.
• ——, Yellow-marked, i. 185.
• Spine-tailed Swift, Ringed, ii. 11.
• Spiny Leaf-scraper, i. 174.
• Spix’s Spine-tail, i. 179.
• Spiziapteryx circumcinctus, ii. 73.
• Spoonbill, Roseate, ii. 114.
• Sporophila ornata, i. 46.
• —— rufirostris, ii. 227.
• Spot-billed Tyrant, i. 134.
• Spot-winged Crake, ii. 155.
• —— Falcon, ii. 73.
• —— Gull, ii. 198.
• —— Pigeon, ii. 140.
• Spotted Dove, ii. 141.
• —— Puff-bird, ii. 30.
• —— Rail, ii. 148.
• —— Tinamou, ii. 211.
• Starling, De Filippi’s, i. 105.
• ——, Patagonian Marsh-, i. 104.
• Steganopus wilsoni, ii. 180.
• Stelgidopteryx ruficollis, i. 36.
• Stenopsis bifasciata, ii. 14.
• Stephanophorus cæruleus, i. 38.
• —— leucocephalus, i. 38.
• Sterna argentea, ii. 197.
• —— cassini, ii. 196.
• —— frobeenii, ii. 195.
• —— hirundinacea, ii. 196.
• —— magnirostris, ii. 194.
• —— maxima, ii. 195.
• —— minuta, ii. 197.
• —— superciliaris, ii. 197.
• —— trudeauii, ii. 195.
• Stigmatura budytoides, i. 139.
• —— flavo-cinerea, i. 10, 139.
• Stilt, Brazilian, ii. 179.
• Stork, Maguari, ii. 106.
• Strange-tailed Tyrant, i. 123.
• Stripe-headed Song-Sparrow, i. 60.
• Striped Spine-tail, i. 182.
• —— Tyrant, i. 111.
• Strix flammea, ii. 48.
• —— perlata, ii. 48.
• Sturnella defilippii, i. 105.
• —— militaris, i. 104.
• Sublegatus griseocularis, i. 147.
• Suiriri chorreado, i. 129.
• Suiriri pardo y roxo, i. 156.
• —— roxo, i. 163.
• —— Tyrant, i. 146.
• Sulphury Tyrant, i. 147.
• Surucuá, ii. 29.
• Swainson’s Buzzard, ii. 59.
• Swallow, Bank, i. 33.
• ——, Red-necked, i. 36.
• ——, White-rumped, i. 30.
• Swan, Coscoroba, ii. 126.
• Swift, Ringed Spine-tailed, ii. 11.
• Sycalis chloropis, i. 69.
• —— lutea, i. 69.
• —— luteiventris, i. 69.
• —— luteola, i. 69.
• —— pelzelni, i. 66, 85.
• —— uropygialis, i. 69.
• Sylbeocyclus dominicus, ii. 205.
• Sylvia chivi, i. 22.
• —— viridicata, i. 146.
• Sylvicola venusta, i. 20.
• Synallaxis ægitholoides, i. 84, 177.
• —— albescens, i. 179, 180, 182, 192.
• —— crassirostris, i. 183; ii. 227.
• —— flavigularis, i. 183.
• —— frontalis, i. 178.
• —— fuliginiceps, i. 177.
• —— hudsoni, i. 81, 186; ii. 79.
• —— humicola, i. 183, 187.
• —— maluroides, i. 188.
• —— melanops, i. 174.
• —— modesta, i. 183, 184.
• —— orbignii, i. 183.
• —— patagonica, i. 186.
• —— phryganophila, i. 181.
• —— ruficapilla, i. 178, 179, 186.
• —— sclateri, i. 186; ii. 223.
• —— scutata, i. 181.
• —— sordida, i. 177, 184.
• —— spixi, i. 79, 179, 180, 192.
• —— striaticeps, i. 182.
• —— sulphurifera, i. 185; ii. 222.
• —— superciliosa, i. 178; ii. 223.
• —— whitii, i. 181; ii. 229, 231.
• Sysopygis icterophrys, i. 125.