Esteban Matías’s scientific contributions

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Publications (4)


First record of Red-throated Pipit Anthus cervinus in Central America
  • Article
  • Full-text available

December 2018

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143 Reads

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3 Citations

Bulletin of the British Ornithologists Club

Esteban Matías

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Figure 1. Habitat of a breeding population of Savannah Sparrow Passerculus sandwichensis wetmorei at 3,700 m in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala, 5 June 2016; the undulating landscape, shaped by glaciers during the late Quaternary, is currently covered with grassland dominated by Muhlenbergia quadridentata (Poaceae) (Knut Eisermann) 
Figure 2. Different adult Savannah Sparrows Passerculus sandwichensis wetmorei of a breeding population in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) lateral; (b) dorsal, 5 June 2016; and (c) frontal view showing the neatly marked median crown-stripe, 2 July 2016 (Knut Eisermann) 
Figure 3. Nesting evidence of Savannah Sparrow Passerculus sandwichensis wetmorei in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) nest with a single nestling, 2 July 2016 (a second nestling was found dead 20 cm from the nest); (b) recently fledged juvenile, barely able to fly, 3 July 2016, (c-d) two fledglings well able to fly, tail c.40% grown, 3 July 2016; (e) dependent juvenile with tail c.80% grown, 3 July 2016; and (f) immature, 27 August 2016 (Knut Eisermann) 
Figure 4. (1) Approximate breeding range of Savannah Sparrow Passerculus sandwichensis in Mexico (sensu Howell & Webb 1995); (2) summer records in the Sierra Los Cuchumatanes, Guatemala, including recent nesting and other summer records (June-July 2016), and historic summer records (June 1897, van Rossem 1938); and (3) summer record from Sierra Madre range in June 2002 (J. Berry in Eisermann & Avendaño 2007). Chis. = Chiapas, Mexico, GT = Guatemala, HN = Honduras, SV = El Salvador. Inset map shows location of summer records of Savannah Sparrow in the Sierra Los Cuchumatanes (SLC) and Sierra Madre (SM) ranges in Guatemala. 
Figure 5. Sonograms of songs of four male Savannah Sparrows Passerculus sandwichensis wetmorei in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) 5 June 2016 (Knut Eisermann, XC333471), including waveform, (b) 5 June 2016 (Knut Eisermann, XC333471), (c) 3 June 2016 (Knut Eisermann, XC333472), (d) 3 June 2016 (Knut Eisermann, XC333473). DW = descendent whistle. See Table 1 for signal measurements of marked notes. 
Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala

March 2017

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215 Reads

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1 Citation

Bulletin of the British Ornithologists Club

We report the discovery of a resident population of Savannah Sparrows Passerculus sandwichensis wetmorei in grassland on a high plateau of the Sierra Los Cuchumatanes in western Guatemala. We observed a nest containing a nestling, and 11 fledglings of other breeding pairs in July 2016, which represent the first confirmation of the species nesting south-east of the Isthmus of Tehuantepec, c.700 km from the nearest known breeding locality in central Mexico. We provide the first description of juvenile plumage for this subspecies. Furthermore, we describe the song of P. sandwichensis wetmorei for the first time, which is similar in structure and signal characteristics to that of northern populations. Based on transects, we estimate a population density of 0.7-4.3 adults / ha in the study area, in the Parque Regional Municipal Todos Santos Cuchumatán, which is similar to published data from the USA and Canada. This is the first documentation of P. sandwichensis wetmorei since the type specimens were collected more than 100 years ago.


Citations (3)


... It is rare south of 05°S in East Africa, and south of the equator across the rest of its wintering range. However, being a long-distance migrant, it is prone to wandering: the species is regularly recorded in coastal California in autumn (Tyler 2004) and has reached Guatemala (Matías & Eisermann 2018) and even Ecuador (Brinkhuizen et al. 2010). It has also been recorded in Australia (Carter 1997) at 18°S. ...

Reference:

First photographically documented record of Red-throated Pipit Anthus cervinus for Namibia and southern Africa
First record of Red-throated Pipit Anthus cervinus in Central America

Bulletin of the British Ornithologists Club

... A nest found in Parque Regional Municipal Todos Santos Cuchumatán, dpto. Huehuetenango, in 2016, was also the first nesting record south-east of the Isthmus of Tehuantepec (Eisermann et al. 2017b). Two were at the same site on 18 November 2016. ...

Primer registro de anidación de Psiloscops flammeolus en Guatemala.

Cotinga

... Petén, in December 2010 (Jones & Komar 2011c) was the first there. The resident race wetmorei (van Rossem 1938) endemic to the west Guatemalan highlands went unreported for more than a century following collection of the type series (Eisermann et al. 2017a). Breeding was erroneously reported by Jones (2002), based on a report wherein the observer assumed nesting but did not observe it (J. ...

Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala

Bulletin of the British Ornithologists Club