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First description of the nest and eggs of the Rufous-Throated Dipper (Cinclus schulzi) in Northwestern Argentina
... More data would be useful throughout the year to show if foraging behaviour of the Rufous-throated Dipper ever changes, for example when river flows are very high. Salvador et al. (1986) suggested that competition between the Rufous-throated Dipper and aquatic furnariids may play some role in causing the restricted range and abundance of the former, although Collar et al. (1992) thought this was doubtful. Dippers and the Cinclodes spp. ...
... Breeding biology Salvador et al. (1986) first described the nest and eggs of the Rufous-throated Dipper, although Fraga and Narosky (1985) refer to eight nests previously found on rock faces by C. C. Olrog about 1 m above the water, and they found a half-built nest on 2 January 1982. The descriptions of the nest and eggs, found by Salvador et al. (1986) in the Valle de Tafi, differ little from our own observations although the grassy inner cups of our nests 3 and 4 were lined with leaves rather than with plastic and paper found by Salvador et al. ...
... Breeding biology Salvador et al. (1986) first described the nest and eggs of the Rufous-throated Dipper, although Fraga and Narosky (1985) refer to eight nests previously found on rock faces by C. C. Olrog about 1 m above the water, and they found a half-built nest on 2 January 1982. The descriptions of the nest and eggs, found by Salvador et al. (1986) in the Valle de Tafi, differ little from our own observations although the grassy inner cups of our nests 3 and 4 were lined with leaves rather than with plastic and paper found by Salvador et al. This was no doubt due to the nests on the Rio Grande being in a more remote situation away from any roads or tracks. ...
Surveys of river birds were made in north-west Argentina in October 1993 and in southern Bolivia in December 1994. Data were collected on foraging behaviour, breeding biology and breeding abundances of the Rufous-throated Dipper Cinclus schulzi (a threatened species) on three river systems in Tucumán and Jujuy provinces in Argentina and on two river systems in Tarija department in Bolivia. Rufous-throated Dippers foraged from wetted rocks and when standing in water in riffles and on the edges of cascades and waterfalls; swimming or diving was not observed. Five nests were found in Argentina, two of which were incomplete. One had a clutch of two eggs and another contained two well-grown, feathered nestlings; the fifth was inaccessible. These records indicate that breeding starts early in the Argentinian spring. Nests of adjacent pairs of Rufous-throated Dippers were from c.650–1,200 m apart. Juvenile plumage resembles that of the adult. Some information is provided on the biometrics of seven birds caught in mist-nets, and on vocalizations and on the relative abundance of dippers, Torrent Ducks Merganetta armata and two species of Cinclodes. Possible threats to rivers within the range of the Rufous-throated Dipper include reservoir construction, hydroelectric and irrigation schemes, eutrophication, deforestation and stock-grazing. Pollution, reduced flows and river channel modification are more prevalent at lower altitudes below the breeding range of the Rufous-throated Dipper.
... The spacing distance between nesting pairs can influence the occupation of nest sites making potentially suitable sites unavailable due to territorial behavior and exclusion effects (Salinas Melgoza et al. 2009). The first nest descriptions of the Rufous-throated Dipper in rivers of northwestern Argentina were made by Dinelli (1918) and Olrog (1949Olrog ( , 1979 and later by Fraga and Narosky (1985), Salvador et al. (1986), Tyler and Tyler (1996) and de la Peña (2005). Detailed knowledge of breeding site characteristics is necessary to understand avian reproductive strategies and the mechanisms that regulate population dynamics (Auer et al. 2007). ...
... The shapes, dimensions, substrates adhered to and building materials used for nests of the Rufous-throated Dipper were similar to those previously recorded (Fraga and Narosky 1985;Salvador et al. 1986;Tyler and Tyler 1996;de la Peña 2005). Furthermore, these characteristics coincide with the shape, substrate and material for nests described for other species of dippers (Cinclus sp.) (Smiddy et al. 1995;Loegering and Anthony 2006). ...
The Rufous-throated Dipper (Cinclus schulzi) is an endemic and threatened bird that inhabits the mountain rivers of southern Yungas of Argentina and Bolivia. This is the rarest and least known species of the genus, in part because of its restricted distribution. The aim of this study was to describe the nests and nest sites of the Rufous-throated Dipper in mountain rivers of northwestern Argentina. Five rivers were surveyed in transects of 3 to 6 km long from 2010 to 2013. The shape, size, substrate and building material of nests and nest and non-nest characteristics were assessed and compared in plots of 2 by 2 m. Plots with nests were compared to non-nesting plots for a number of habitat characteristics. Most nests found (78.57%; n = 28) had a globular shape, were attached to rocky substrates and were built using moss. The height of nests above the water level (P = 0.02), slope (P = 0.03) and watercourse width (P < 0.01) varied among rivers. Plots at nest sites had significantly higher values of some habitat characteristics than non-nesting plots, including emergent rocks (P < 0.01), slope (P < 0.02), greater number of rapids (P < 0.01), number of pools (P < 0.01), water velocity (P < 0.05), and river depth (P < 0.01), but had narrower watercourse width (P < 0.01). Previously, the understanding of the breeding ecology of the Rufous-throated Dipper was based only on anecdotal evidence. Understanding the breeding habitat requirements is a prerequisite for the development of a conservation action plan for this threatened species.
... En Argentina habita las provincias de Jujuy, Salta, Tucumán y Catamarca (Canevari et al. 1991, de la Peña & Rumboll 1998, asociado a cursos de agua que atraviesan los bosques montanos de tabaquillo (Polylepis australis), pino del cerro (Podocarpus parlatorei) y aliso del cerro (Alnus acuminata), con intrusiones en la selva montana, y en los bosques del chaco serrano y la selva de transición durante el invierno (Tyler & Tyler 1996, Mazar Barnett et al. 1998, Ortíz et al. 2013. En Catamarca fue reportado en el departamento Andalgalá: la Cuesta del Clavillo (27°20'S, 65°57'O), Esquina Grande -Río Chacras (27°23'S, 65°58'O) y El Alamito (27°28'S, 66°00'O) (Fraga & Narosky 1985, Salvador et al. 1986, de la Peña 2013. Moschione (2005a, b) señaló la presencia del Mirlo de Agua para las AICAs Cuesta del Totoral y Cuesta de las Higuerillas, sin dar detalles de localización precisa de esos registros. ...
Presentamos nuevas observaciones en cinco ríos de montaña ubicados en
los departamentos Andalgalá, Ambato, Pomán y Capayán
de la provincia de Catamarca. Realizamos las observaciones
entre 1996 y 2014, sobre tramos de ríos que atraviesan
ambientes de pastizal de altura con elementos de chaco
serrano, y de bosques montanos de pino y aliso del cerro,
entre los 1373 y los 2151 msnm. Encontramos
entre uno y tres individuos en cada sitio. Las observaciones
en el Río Los Ángeles amplían aproximadamente en 100
km la distribución conocida de la especie hacia el sur de
Argentina (la localidad más austral conocida era El Alamito).
Las observaciones en el Río Las Trancas, ambas invernales,
podrían tratarse de individuos migrantes altitudinales
... The shapes, dimensions, substrates adhered to and building materials used for nests of the Rufous-throated Dipper were similar to those previously recorded (Fraga and Narosky 1985; Salvador et al. 1986; Tyler and Tyler 1996; de la Peña 2005 ). Furthermore , these characteristics coincide with the shape, substrate and material for nests described for other species of dippers (Cinclus sp.) (Smiddy et al. 1995; Loegering and Anthony 2006). ...
Abstract.—The Rufous-throated Dipper (Cinclus schulzi) is an endemic and threatened bird that inhabits the mountain rivers of southern Yungas of Argentina and Bolivia. This is the rarest and least known species of the genus, in part because of its restricted distribution. The aim of this study was to describe the nests and nest sites of the Rufous-throated Dipper in mountain rivers of northwestern Argentina. Five rivers were surveyed in transects of 3 to 6 km long from 2010 to 2013. The shape, size, substrate and building material of nests and nest and non-nest characteristics were assessed and compared in plots of 2 by 2 m. Plots with nests were compared to non-nesting plots for a number of habitat characteristics. Most nests found (78.57%; n = 28) had a globular shape, were attached to rocky substrates and were built using moss. The height of nests above the water level (P = 0.02), slope (P = 0.03) and watercourse width (P < 0.01) varied among rivers. Plots at nest sites had significantly higher values of some habitat characteristics than non-nesting plots, including emergent rocks (P < 0.01), slope (P < 0.02), greater number of rapids (P < 0.01), number of pools (P < 0.01), water velocity (P < 0.05), and river depth (P < 0.01), but had narrower watercourse width (P < 0.01). Previously, the understanding of the breeding ecology of the Rufous-throated Dipper was based only on anecdotal evidence. Understanding the breeding habi- tat requirements is a prerequisite for the development of a conservation action plan for this threatened species.
... The shapes, dimensions, substrates adhered to and building materials used for nests of the Rufous-throated Dipper were similar to those previously recorded (Fraga and Narosky 1985; Salvador et al. 1986; Tyler and Tyler 1996; de la Peña 2005 ). Furthermore , these characteristics coincide with the shape, substrate and material for nests described for other species of dippers (Cinclus sp.) (Smiddy et al. 1995; Loegering and Anthony 2006). ...
The Rufous-throated Dipper (Cinclus schulzi) is an endemic and threatened bird that inhabits the mountain rivers of southern Yungas of Argentina and Bolivia. This is the rarest and least known species of the genus, in part because of its restricted distribution. The aim of this study was to describe the nests and nest sites of the Rufous-throated Dipper in mountain rivers of northwestern Argentina. Five rivers were surveyed in transects of 3 to 6 km long from 2010 to 2013. The shape, size, substrate and building material of nests and nest and non-nest characteristics were assessed and compared in plots of 2 by 2 m. Plots with nests were compared to non-nesting plots for a number of habitat characteristics. Most nests found (78.57%; n = 28) had a globular shape, were attached to rocky substrates and were built using moss. The height of nests above the water level (P = 0.02), slope (P = 0.03) and watercourse width (P < 0.01) varied among rivers. Plots at nest sites had significantly higher values of some habitat characteristics than non-nesting plots, including emergent rocks (P < 0.01), slope (P < 0.02), greater number of rapids (P < 0.01), number of pools (P < 0.01), water velocity (P < 0.05), and river depth (P < 0.01), but had narrower watercourse width (P < 0.01). Previously, the understanding of the breeding ecology of the Rufous-throated Dipper was based only on anecdotal evidence. Understanding the breeding habitat requirements is a prerequisite for the development of a conservation action plan for this threatened species.
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