Microstructures Amplify Carotenoid Plumage Signals in Tanagers Dakota E
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Birding the Madeira‐Tapajos Interfluvium 2017
Field Guides Tour Report GREAT RIVERS OF THE AMAZON II: BIRDING THE MADEIRA‐TAPAJOS INTERFLUVIUM 2017 Aug 1, 2017 to Aug 16, 2017 Bret Whitney, Tom Johnson, and Micah Riegner For our tour description, itinerary, past triplists, dates, fees, and more, please VISIT OUR TOUR PAGE. Incredible sunsets were met with full checklists, full (and then empty) caipirinhas, and full stomachs back on our riverboat home, the Tumbira. Photo by guide Tom Johnson. An extended voyage into remote areas full of amazing birds but infrequently visited by birders? Yes, please! This two-week tour of the Madeira-Tapajos interfluvium (south of the Amazon) was chock-full of birds and lots of adventure in a comfortable setting with fantastic company. We kicked off this grand adventure in Amazonia in the bustling metropolis of Manaus where we boarded a comfortable and fast speed launch, checking out the meeting of the blackwater Rio Negro and the whitewater Solimoes just downstream from Manaus before blasting off. We shot down the Amazona and then up the Rio Madeira to the riverside town of Borba, cruising past Amazon River Dolphins, Horned Screamers, and Short-tailed Parrots along the way. Borba was our home for three nights, and we used this frontier base as our hub of land-based exploration of the right bank of the Madeira. This was a location notable for the ornithological collections of Natterer, and an area that Bret has visited repeatedly due to its interesting avifauna. Contrasting with a fire-choked season during the tour in 2015, we were fortunate to bird several excellent forest tracts this without issue - well, our endless stream of replacement VW Combi vans notwithstanding! Fortunately, our team on the ground managed our vehicle problems and we were able to continue birding. -
Turismo De Observación De Aves En El Santuario Nacional Pampa Hermosa Como Modelo De Desarrollo Sostenible En Los Distritos De San Ramon Y Huasahuasi”
UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS FACULTAD DE CIENCIAS ADMINISTRATIVAS E. A. P. DE ADMINISRACIÓN DE TURISMO “TURISMO DE OBSERVACIÓN DE AVES EN EL SANTUARIO NACIONAL PAMPA HERMOSA COMO MODELO DE DESARROLLO SOSTENIBLE EN LOS DISTRITOS DE SAN RAMON Y HUASAHUASI” TESIS Para optar el título profesional de Licenciada en Administración de Turismo AUTOR Mariella Ines Motta Sevelora ASESOR Cecilia Castillo Yui Lima – Perú 2015 Dedicatoria A Vilma Sevelora, mi madre Al Apu Pampa Hermosa, nuestro eterno hogar A la UNMSM, mi alma mater 2 AGRADECIMIENTOS Agradezco infinitamente a mis padres por darme su confianza, apoyo moral y económico en toda mi carrera, gracias a ustedes puedo cumplir uno de mis sueños, ¡Los amo! A mi abuelita Aurelia mi segunda mama por su amor y compañía, a mi abuelito Carlos por nunca perder la fe en este proyecto y darme sus sabios consejos, a mi tío José y mi hermana por su confianza. Agradezco también a mi querida Universidad Nacional Mayor de San Marcos por darme la oportunidad de ser parte de esta travesía de constante aprendizaje que me hace amar y valorar mi hermosa tierra. A mis amigos en especial a María de los Ángeles por sus consejos, apoyo logístico por compartir conmigo sus opiniones y sueños en nuestras largas charlas acerca de Pampa Hermosa, sobre todo por su enorme confianza en este trabajo, a la Sra. Luz Gonzales por darme un espacio en su hogar, por su preocupación y hacerme sentir parte de su familia. Agradecer también a los amigos de Nueva Italia y Ninabamba por su hospitalidad, sencillez, sus risas y su infatigable fortaleza que hacían de mis visitas realmente enriquecedoras y fueron mi ejemplo e inspiración, especialmente al Sr. -
Morphological and Molecular Identification of Isospora
Acta Protozool. (2019) 58: 17–23 www.ejournals.eu/Acta-Protozoologica ACTA doi:10.4467/16890027AP.19.007.10838 PROTOZOOLOGICA Morphological and Molecular Identification of Isospora sepetibensis (Chromista: Miozoa: Eimeriidae) from a New Host, Trichothraupis melanops (Passeriformes: Thraupidae: Tachyphoninae) in South America Jhon Lennon GENOVEZ-OLIVEIRA1, Sergian V. CARDOZO2, Águida A. de OLIVEIRA3, Viviane M. de LIMA3, Ildemar FERREIRA3, Bruno P. BERTO3 1 Programa de Pós-Graduação em Biologia Animal, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Brazil 2 Programa de Pós-Graduação em Biomedicina Translacional, Universidade do Grande Rio, Rua Professor José de Souza Herdy 1160, 25071-202 Duque de Caxias, RJ, Brazil 3 Departamento de Biologia Animal, Instituto de Ciências Biológicas e da Saúde, UFRRJ, RJ, Brazil Abstract. Isospora sepetibensis Berto, Flausino, Luz, Ferreira and Lopes, 2008 is a protozoan coccidian parasite (Chromista: Miozoa: Coc- cidiomorphea: Coccidia) that was originally described from Brazilian tanagers Ramphocelus bresilius (Linnaeus, 1766) in the Marambaia Island in the Coast of the State of Rio de Janeiro. In the current work, this species was identified from black-goggled tanagersTrichothraupis melanops (Vieillot, 1818) in the Itatiaia National Park, which is a protected area with a high degree of vulnerability in the interior of the State of Rio de Janeiro, distant in more than 100 km of the type-locality. Its oocysts are sub-spherical to elongate ovoidal, 25.9 × 20.7 µm with smooth, bi-layered wall, ~ 1.3 µm and length/width ratio of 1.1–1.4 (1.26). Micropyle and oocyst residuum absent, but one or two polar granules are present. -
TOUR REPORT Southwestern Amazonia 2017 Final
For the first time on a Birdquest tour, the Holy Grail from the Brazilian Amazon, Rondonia Bushbird – male (Eduardo Patrial) BRAZIL’S SOUTHWESTERN AMAZONIA 7 / 11 - 24 JUNE 2017 LEADER: EDUARDO PATRIAL What an impressive and rewarding tour it was this inaugural Brazil’s Southwestern Amazonia. Sixteen days of fine Amazonian birding, exploring some of the most fascinating forests and campina habitats in three different Brazilian states: Rondonia, Amazonas and Acre. We recorded over five hundred species (536) with the exquisite taste of specialties from the Rondonia and Inambari endemism centres, respectively east bank and west bank of Rio Madeira. At least eight Birdquest lifer birds were acquired on this tour: the rare Rondonia Bushbird; Brazilian endemics White-breasted Antbird, Manicore Warbling Antbird, Aripuana Antwren and Chico’s Tyrannulet; also Buff-cheeked Tody-Flycatcher, Acre Tody-Tyrant and the amazing Rufous Twistwing. Our itinerary definitely put together one of the finest selections of Amazonian avifauna, though for a next trip there are probably few adjustments to be done. The pre-tour extension campsite brings you to very basic camping conditions, with company of some mosquitoes and relentless heat, but certainly a remarkable site for birding, the Igarapé São João really provided an amazing experience. All other sites 1 BirdQuest Tour Report: Brazil’s Southwestern Amazonia 2017 www.birdquest-tours.com visited on main tour provided considerably easy and very good birding. From the rich east part of Rondonia, the fascinating savannas and endless forests around Humaitá in Amazonas, and finally the impressive bamboo forest at Rio Branco in Acre, this tour focused the endemics from both sides of the medium Rio Madeira. -
Ornithological Surveys in Serranía De Los Churumbelos, Southern Colombia
Ornithological surveys in Serranía de los Churumbelos, southern Colombia Paul G. W . Salaman, Thomas M. Donegan and Andrés M. Cuervo Cotinga 12 (1999): 29– 39 En el marco de dos expediciones biológicos y Anglo-Colombian conservation expeditions — ‘Co conservacionistas anglo-colombianas multi-taxa, s lombia ‘98’ and the ‘Colombian EBA Project’. Seven llevaron a cabo relevamientos de aves en lo Serranía study sites were investigated using non-systematic de los Churumbelos, Cauca, en julio-agosto 1988, y observations and standardised mist-netting tech julio 1999. Se estudiaron siete sitios enter en 350 y niques by the three authors, with Dan Davison and 2500 m, con 421 especes registrados. Presentamos Liliana Dávalos in 1998. Each study site was situ un resumen de los especes raros para cada sitio, ated along an altitudinal transect at c. 300- incluyendo los nuevos registros de distribución más m elevational steps, from 350–2500 m on the Ama significativos. Los resultados estabilicen firme lo zonian slope of the Serranía. Our principal aim was prioridad conservacionista de lo Serranía de los to allow comparisons to be made between sites and Churumbelos, y aluco nos encontramos trabajando with other biological groups (mammals, herptiles, junto a los autoridades ambientales locales con insects and plants), and, incorporating geographi cuiras a lo protección del marcizo. cal and anthropological information, to produce a conservation assessment of the region (full results M e th o d s in Salaman et al.4). A sizeable part of eastern During 14 July–17 August 1998 and 3–22 July 1999, Cauca — the Bota Caucana — including the 80-km- ornithological surveys were undertaken in Serranía long Serranía de los Churumbelos had never been de los Churumbelos, Department of Cauca, by two subject to faunal surveys. -
Rethinking Color Cameras
Rethinking Color Cameras Ayan Chakrabarti William T. Freeman Todd Zickler Harvard University Massachusetts Institute of Technology Harvard University Cambridge, MA Cambridge, MA Cambridge, MA [email protected] [email protected] [email protected] Abstract Digital color cameras make sub-sampled measurements of color at alternating pixel locations, and then “demo- saick” these measurements to create full color images by up-sampling. This allows traditional cameras with re- stricted processing hardware to produce color images from a single shot, but it requires blocking a majority of the in- cident light and is prone to aliasing artifacts. In this paper, we introduce a computational approach to color photogra- phy, where the sampling pattern and reconstruction process are co-designed to enhance sharpness and photographic speed. The pattern is made predominantly panchromatic, thus avoiding excessive loss of light and aliasing of high spatial-frequency intensity variations. Color is sampled at a very sparse set of locations and then propagated through- out the image with guidance from the un-aliased luminance channel. Experimental results show that this approach often leads to significant reductions in noise and aliasing arti- facts, especially in low-light conditions. Figure 1. A computational color camera. Top: Most digital color cameras use the Bayer pattern (or something like it) to sub-sample 1. Introduction color alternatingly; and then they demosaick these samples to create full-color images by up-sampling. Bottom: We propose The standard practice for one-shot digital color photog- an alternative that samples color very sparsely and is otherwise raphy is to include a color filter array in front of the sensor panchromatic. -
Dacninae Species Tree, Part I
Dacninae I: Nemosiini, Conirostrini, & Diglossini Hooded Tanager, Nemosia pileata Cherry-throated Tanager, Nemosia rourei Nemosiini Blue-backed Tanager, Cyanicterus cyanicterus White-capped Tanager, Sericossypha albocristata Scarlet-throated Tanager, Sericossypha loricata Bicolored Conebill, Conirostrum bicolor Pearly-breasted Conebill, Conirostrum margaritae Chestnut-vented Conebill, Conirostrum speciosum Conirostrini White-eared Conebill, Conirostrum leucogenys Capped Conebill, Conirostrum albifrons Giant Conebill, Conirostrum binghami Blue-backed Conebill, Conirostrum sitticolor White-browed Conebill, Conirostrum ferrugineiventre Tamarugo Conebill, Conirostrum tamarugense Rufous-browed Conebill, Conirostrum rufum Cinereous Conebill, Conirostrum cinereum Stripe-tailed Yellow-Finch, Pseudochloris citrina Gray-hooded Sierra Finch, Phrygilus gayi Patagonian Sierra Finch, Phrygilus patagonicus Peruvian Sierra Finch, Phrygilus punensis Black-hooded Sierra Finch, Phrygilus atriceps Gough Finch, Rowettia goughensis White-bridled Finch, Melanodera melanodera Yellow-bridled Finch, Melanodera xanthogramma Inaccessible Island Finch, Nesospiza acunhae Nightingale Island Finch, Nesospiza questi Wilkins’s Finch, Nesospiza wilkinsi Saffron Finch, Sicalis flaveola Grassland Yellow-Finch, Sicalis luteola Orange-fronted Yellow-Finch, Sicalis columbiana Sulphur-throated Finch, Sicalis taczanowskii Bright-rumped Yellow-Finch, Sicalis uropigyalis Citron-headed Yellow-Finch, Sicalis luteocephala Patagonian Yellow-Finch, Sicalis lebruni Greenish Yellow-Finch, -
Spatial Filtering, Color Constancy, and the Color-Changing Dress Department of Psychology, American University, Erica L
Journal of Vision (2017) 17(3):7, 1–20 1 Spatial filtering, color constancy, and the color-changing dress Department of Psychology, American University, Erica L. Dixon Washington, DC, USA Department of Psychology and Department of Computer Arthur G. Shapiro Science, American University, Washington, DC, USA The color-changing dress is a 2015 Internet phenomenon divide among responders (as well as disagreement from in which the colors in a picture of a dress are reported as widely followed celebrity commentators) fueled a rapid blue-black by some observers and white-gold by others. spread of the photo across many online news outlets, The standard explanation is that observers make and the topic trended worldwide on Twitter under the different inferences about the lighting (is the dress in hashtag #theDress. The huge debate on the Internet shadow or bright yellow light?); based on these also sparked debate in the vision science community inferences, observers make a best guess about the about the implications of the stimulus with regard to reflectance of the dress. The assumption underlying this individual differences in color perception, which in turn explanation is that reflectance is the key to color led to a special issue of the Journal of Vision, for which constancy because reflectance alone remains invariant this article is written. under changes in lighting conditions. Here, we The predominant explanations in both scientific demonstrate an alternative type of invariance across journals (Gegenfurtner, Bloj, & Toscani, 2015; Lafer- illumination conditions: An object that appears to vary in Sousa, Hermann, & Conway, 2015; Winkler, Spill- color under blue, white, or yellow illumination does not change color in the high spatial frequency region. -
RBMV011 a Diagnostic Tool to Identify Species of the Genus
A DIAGNOSTIC TOOL TO IDENTIFY SPECIES OF THE GENUS Isospora SCHNEIDER, 1881 (APICOMPLEXA: EIMERIIDAE) BASED ON SPORULATED OOCYSTS FROM THAUPIDAE FAMILY (AVES: PASSERIFORMES): A DICHOTOMOUS KEY* UMA FERRAMENTA DE DIAGNÓSTICO PARA IDENTIFICAR ESPÉCIES DE Isospora SCHNEIDER, 1881 (APICOMPLEXA: EIMERIIDAE) DA FAMÍLIA THAUPIDAE (AVES: PASSERIFORMES) COM BASE EM OOCISTOS ESPORULADOS: UMA CHAVE DICOTÔMICA Bruno Pereira Berto1, Hermes Ribeiro Luz2, Ildemar Ferreira3, Walter Flausino4 and Carlos Wilson Gomes Lopes5 ABSTRACT. Berto B.P., Luz, H.B., Ferreira I., Flausino W. & Lopes C.W.G. A diagnostic tool to identify species of the genus Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) based on sporulated oocysts from Thaupidae family (Aves: Passeriformes): a dichotomous key [Uma ferramenta de diagnóstico para identificar espécies de Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) da família Thaupidae (Aves: Passeriformes): uma chave dicotômica]. Revista Brasileira de Medicina Veterinária, 32(3):182-186, 2010. Laboratório de Coccídios e Coccidioses, Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, BR 465 km 7, Seropédica, RJ 23890-000, Brasil. E-mail: [email protected] The birds of the Thraupidae family, similar to other passerine birds can be infected by coccidia, and the genus Isospora can be considered the most relevant. Isospora thraupis, I. andesensis, I. irisidornisi, I. tiesangui, I. marambaiensis, I. sepetibensis, I. cadimi, I. navarroi, I. ramphoceli, I. sanhaci, I. sayacae and I. silvasouzai were described from thraupids of South American and considering that these birds are sympatric hosts of other birds that inhabit South, North and Central Americas, it is concluded that these parasites should be widely dispersed in the America Continent. -
Color Constancy and Contextual Effects on Color Appearance
Chapter 6 Color Constancy and Contextual Effects on Color Appearance Maria Olkkonen and Vebjørn Ekroll Abstract Color is a useful cue to object properties such as object identity and state (e.g., edibility), and color information supports important communicative functions. Although the perceived color of objects is related to their physical surface properties, this relationship is not straightforward. The ambiguity in perceived color arises because the light entering the eyes contains information about both surface reflectance and prevailing illumination. The challenge of color constancy is to estimate surface reflectance from this mixed signal. In addition to illumination, the spatial context of an object may also affect its color appearance. In this chapter, we discuss how viewing context affects color percepts. We highlight some important results from previous research, and move on to discuss what could help us make further progress in the field. Some promising avenues for future research include using individual differences to help in theory development, and integrating more naturalistic scenes and tasks along with model comparison into color constancy and color appearance research. Keywords Color perception • Color constancy • Color appearance • Context • Psychophysics • Individual differences 6.1 Introduction Color is a useful cue to object properties such as object identity and state (e.g., edibility), and color information supports important communicative functions [1]. Although the perceived color of objects is related to their physical surface properties, M. Olkkonen, M.A. (Psych), Dr. rer. nat. (*) Department of Psychology, Science Laboratories, Durham University, South Road, Durham DH1 3LE, UK Institute of Behavioural Sciences, University of Helsinki, Siltavuorenpenger 1A, 00014 Helsinki, Finland e-mail: [email protected]; maria.olkkonen@helsinki.fi V. -
Ecuador: HARPY EAGLE & EAST ANDEAN FOOTHILLS EXTENSION
Tropical Birding Trip Report Ecuador: HARPY EAGLE & East Andean Foothills Extension (Jan-Feb 2021) A Tropical Birding custom extension Ecuador: HARPY EAGLE & EAST ANDEAN FOOTHILLS EXTENSION th nd 27 January - 2 February 2021 The main motivation for this custom extension was this Harpy Eagle. This was one of an unusually accessible nesting pair near the Amazonian town of Limoncocha that provided a worthy add-on to The Andes Introtour in northwest Ecuador that preceded this (Jose Illanes/Tropical Birding Tours). Guided by Jose Illanes Birds in the photos within this report are denoted in RED, all photos were taken by the Tropical Birding guide. 1 www.tropicalbirding.com +1-409-515-9110 [email protected] Tropical Birding Trip Report Ecuador: HARPY EAGLE & East Andean Foothills Extension (Jan-Feb 2021) INTRODUCTION This custom extension trip was set up for one person who simply could not get enough of Ecuador…John had just finished Ecuador: The Andes Introtour, in the northwest of the country, and also joined the High Andes Extension to that tour, which sampled the eastern highlands too. However, he was still missing vast chunks of this small country that is bursting with bird diversity. Most importantly, he was keen to get in on the latest “mega bird” in Ecuador, a very accessible Harpy Eagle nest, near a small Amazonian town, which had been hitting the local headlines and drawing the few birding tourists in the country at this time to come see it. With this in mind, TROPICAL BIRDING has been offering custom add-ons to all of our Ecuador offerings (for 2021 and 2022) to see this Harpy Eagle pair, with only three extra days needed to see it. -
Spatuletails, Owlet Lodge & More 2018
Field Guides Tour Report Peru's Magnetic North: Spatuletails, Owlet Lodge & More 2018 Jun 23, 2018 to Jul 5, 2018 Dan Lane & Jesse Fagan For our tour description, itinerary, past triplists, dates, fees, and more, please VISIT OUR TOUR PAGE. The name of this tour highlights a few of the spectacular birds that make their homes in Peru's northern regions, and we saw these, and many more! This might have been called the "Antpittas and More" tour, since we had such great views of several of these formerly hard-to-see species. This Ochre-fronted Antpitta was one; she put on a fantastic display for us! Photo by participant Linda Rudolph. The eastern foothills of Andes of northern Peru are one of those special places on the planet… especially if you’re a fan of birds! The region is characterized by pockets of white sand forest at higher elevations than elsewhere in most of western South America. This translates into endemism, and hence our interest in the region! Of course, the region is famous for the award-winning Marvelous Spatuletail, which is actually not related to the white sand phenomenon, but rather to the Utcubamba valley and its rainshadow habitats (an arm of the dry Marañon valley region of endemism). The white sand endemics actually span areas on both sides of the Marañon valley and include several species described to science only since about 1976! The most famous of this collection is the diminutive Long-whiskered Owlet (described 1977), but also includes Cinnamon Screech-Owl (described 1986), Royal Sunangel (described 1979), Cinnamon-breasted Tody-Tyrant (described 1979), Lulu’s Tody-Flycatcher (described 2001), Chestnut Antpitta (described 1987), Ochre-fronted Antpitta (described 1983), and Bar-winged Wood-Wren (described 1977).