Research by Knut Eisermann

juvenile Bearded Screech-Owl by Knut Eisermann
Juvenile Bearded Screech-Owl Megascops barbarus, endemic to the highlands of Guatemala and the neighboring Mexican state of Chiapas.

My primary research interests are the distribution of birds in Guatemala and the natural history of selected species. I led research on the distribution and natural history of the regional endemic and globally Endangered Azure-rumped Tanager, on the distribution and natural history of owls in Guatemala, the rediscovery of the resident wetmorei subspecies of Savannah Sparrow, on bird inventories of several Important Bird Areas. I also contributed to the biology and conservation of Highland Guan, Horned Guan, Resplendent Quetzal and others (more details).

It follows a list of publication in chronological order, which also include some contributions to the herpetology of Guatemala, to the ecology of Jackdaw in Germany, and to local dragonfly faunas in Germany:

Peer-reviewed publications in journals

  • Eisermann, K. & C. Avendaño (2018) An update on the inventory, distribution and residency status of bird species in Guatemala. Bulletin British Ornithologists' Club 138: 148-229. PDF
  • Eisermann, K., E. Matías & C. Avendaño (2017) Primer registro de anidación de Psiloscops flammeolus en Guatemala. Cotinga 39: 53-59. PDF
  • Eisermann, K. (2017) A new locality and elevational range extension for Rhinophrynus dorsalis Duméril & Bibron, 1841 (Anura: Rhinophrynidae), and a noteworthy record for Hypopachus variolosus (Cope, 1866) (Anura: Microhylidae) in Guatemala. Mesoamerican Herpetology 4: 688-692. PDF
  • Eisermann, K., C. Avendaño & E. Matías (2017) Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala. Bulletin of the British Ornithologists' Club 137: 37-45. PDF
  • Schulz, U. & K. Eisermann (2017) Morphometric differentiation between subspecies of Resplendent Quetzal (Pharomachrus mocinno mocinno and P. m. costaricensis) based on male uppertail-coverts. Bulletin of the British Ornithologists' Club 137: 287-291. PDF
  • Eisermann, K. & M. Acevedo (2016) A new locality for the Endangered Abronia gaiophantasma Campbell and Frost, 1993 (Squamata: Anguidae) in Alta Verapaz, Guatemala, with notes on morphology. Mesoamerican Herpetology 3: 1085-1089. PDF
  • Eisermann, K., C. Avendaño, E. Matías & M. Acevedo (2016) Elevational range extension and a new habitat for Thamnophis fulvus (Bocourt, 1893) (Squamata: Natricidae). Mesoamerican Herpetology 3: 1094-1097. PDF
  • Eisermann, K. (2013) Vocal field marks of Unspotted Saw-whet Owl and Guatemalan Pygmy-Owl. Neotropical Birding 13: 8-13. PDF
  • Eisermann, K., C. Avendaño & P. Tanimoto (2013). Birds of the Cerro El Amay Important Bird Area, Quiché, Guatemala.Cotinga 35: 81-93. PDF
  • Eisermann, K. (2013) Noteworthy nesting record and unusual bill coloration of Resplendent Quetzal Pharomachrus mocinno. Cotinga 35: 76-80. PDF
  • Enríquez, P. L., K. Eisermann & H. Mikkola (2012) Los búhos de México y Centroamérica: necesidades en investigación y conservación. Ornitología Neotropical 23, Suppl.: 247-260. PDF
  • Schulz, U. & K. Eisermann (2012) Morphologische Unterscheidung von Guatemala-Quetzal Pharomachrus mocinno und Costa-Rica-Quetzal P. costaricensis anhand der Schmuckfedern. Ornithologischer Anzeiger 51: 70-74.
  • Eisermann, K. & S. N. G. Howell (2011). Vocalizations of the Guatemalan Pygmy-Owl (Glaucidium cobanense). Journal of Raptor Research 45: 304-314. PDF
  • Eisermann, K., S. Arbeiter, G. López, C. Avendaño & J. d. León Lux (2011) Distribution, habitat use, and implications for the conservation of the globally threatened Azure-rumped Tanager Tangara cabanisi in Guatemala. Bird Conservation International 21: 423-437. PDF
  • Eisermann, K., S. Arbeiter, G. López, C. Avendaño, J. de León Lux, A. Burge, A. de León Lux & E. Buchán (2011). Nesting ecology of the Endangered Azure-rumped Tanager (Tangara cabanisi) in Guatemala. Ornitología Neotropical 22: 39-57. PDF
  • Eisermann, K., G. López, J. Berry, J. de León Lux & A. Burge (2011) Vocalisations and juvenile plumage of the Azure-rumped Tanager. Cotinga 33: 23-26. PDF
  • Eisermann, K. & C. Avendaño (2009) Conservation priority-setting in Guatemala through the identification of Important Bird Areas. Proceedings of the Fourth International Partners in Flight Conference, Tundra to Tropics: 315-327. PDF
  • Eitniear, J. C. & K. Eisermann (2009) Status and recent sightings of Ocellated Quail. International Journal of Galliformes Conservation 1: 85-93. PDF
  • Eisermann, K. (2009) Abundance of shorebirds on the Caribbean coast of Guatemala. Waterbirds 32: 337-344. Abstract
  • Eisermann, K. & K. Omland (2007) Coloration anomaly of a male Collared Trogon (Trogon collaris). Acta Zoológica Mexicana (n.s.) 23(2): 197-200. PDF
  • Eisermann, K., A. Burge & G. López (2007) Nesting records of Horned Guan (Oreophasis derbianus) on Atitlán volcano, Guatemala. Bulletin of the IUCN / BIRDLIFE / WPA Cracid Specialist Group 23: 13-24. PDF
  • Eisermann, K. & D. M. Brooks (2006) Unusual and noteworthy nesting records for Guatemala. Cotinga 26: 48-51. PDF
  • Grijalva, B. & K. Eisermann (2006) Observación de un inmaduro de Morphnus guianensis en Tikal, Petén, Guatemala. Pato-Poc 3: 26-29. PDF
  • Heinrichs, N., K. Eisermann & C. Avendaño (2006) Conteo de aves rapaces migratorias en la vertiente pacífica de Guatemala en octubre y noviembre 2005. Pato-Poc 3: 10-17. PDF
  • Eisermann, K. & J. Börner (2006) Populationsökologie und Auswirkungen von Manipulationen des Nistplatzangebotes an einer Brutkolonie der Dohle (Coloeus monedula) in Chemnitz. (Population ecology and consequences of nest site supply in a Jackdaw Coloeus monedula breeding colony in Chemnitz) Mitteilungen des Vereins Sächsischer Ornithologen 9: 611-622.
  • Eisermann, K. (2005) An observation of foliage-bathing by an Orange-breasted Falcon (Falco deiroleucus) in Tikal, Guatemala. Wilson Bulletin 117: 415-418.Abstract
  • Eisermann, K. & U. Schulz (2005) Birds of a high-altitude cloud forest in Alta Verapaz, Guatemala. Revista de Biología Tropical 53: 577-594. PDF
  • Eisermann, K. (2005) Noteworthy bird observations in Alta Verapaz, Guatemala. Bulletin of the British Ornithologists’ Club 125: 3-11. PDF
  • Eisermann, K. (2004) Status of Great Curassow (Crax rubra) in Punta de Manabique, Guatemala: habitat, population size and human impact. Bulletin of the IUCN / BIRDLIFE / WPA Cracid Specialist Group 18: 11-15. PDF
  • Eisermann, K. & C. Avendaño (2004) American White Pelican Pelecanus erythrorhynchos in interior Guatemala. Cotinga 22: 98-99. PDF
  • Eisermann, K. (2003) Status and conservation of the Yellow-headed Parrot Amazona oratrix "guatemalensis" on the Atlantic coast of Guatemala. Bird Conservation International 13: 359-364. PDF
  • Eisermann, K. (2003) First records of the White-crowned Pigeon (Columba leucocephala), the Rufous-necked Wood-Rail (Aramides axillaris), and the Snowy Cotinga (Carpodectes nitidus) for Guatemala. Ornitología Neotropical 14: 127-128. PDF
  • Eisermann, K. & U. Schulz (2002) Ermittlung von Vogel-Zielarten für ein Regenwaldschutzprojekt. (Bird target species for a rain forest conservation project.) Beiträge für Forstwirtschaft und Landschaftsökologie 36: 14-17. PDF
  • Eisermann, K., J. Börner & J. Petke (2002) Auftreten von rezessiv vererbtem Leuzismus bei der Dohle (Corvus monedula). (Occurring of recessive transmitted leucism in Jackdaws [Corvus monedula]). Mitteilungen des Vereins Sächsischer Ornithologen 9: 63-66.
  • Schulz, U. & K. Eisermann (2001) Significant Resplendent Quetzal Pharomachrus mocinno population found in an unprotected forest in Guatemala. Cotinga 15: 4.
  • Eisermann, K. (2000) Ökologische Bewertung einer ehemaligen Militärfläche: Das Tanklager Zeisigwald. (Ecological evaluation of a former military area: the Tanklager Zeisigwald). Veröff. Museum für Naturkunde Chemnitz 23: 51-62.
  • Eisermann, K., Schulz, U. & Oehlke, J. (2000) Die Libellenfauna eines extensiv genutzten Schiffahrtkanals - der Finowkanal in Eberswalde. (The odonatan fauna of an non intensively used shipping canal: the Finowkanal in Eberswalde [Odonata]). Entomologische Nachrichten und Berichte 44: 253-258.
  • Börner, J. & K. Eisermann (1999) Ergebnisse des Artenschutzprojektes für die Dohle (Corvus monedula) in der Region Chemnitz 1991-1997. (Results of the conservation project for the jackdaw (Corvus monedula) in the region of Chemnitz 1991-1997). Mitteilungen des Vereins Sächsischer Ornithologen 8, Sonderheft 2: 21-33.

Books and book chapters

  • Eisermann, K. & C. Avendaño (2017) The owls of Guatemala. 447-515 in P. L. Enríquez (ed.) Neotropical owls: diversity and conservation. Springer, Cham, Switzerland.
  • Enríquez, P. L., K. Eisermann, H. Mikkola & J. C. Motta-Junior (2017) A review of the systematics of Neotropical owls (Strigiformes). 7-19 in P. L. Enríquez (ed.) Neotropical owls: diversity and conservation. Springer, Cham, Switzerland.
  • Eisermann, K. & C. Avendaño (2015) Los búhos de Guatemala. 381-434 in P. L. Enríquez (ed.) Los búhos neotropicales: diversidad y conservación. ECOSUR, San Cristóbal de las Casas, Chiapas, México.
  • Enríquez, P. L., K. Eisermann, J. C. Motta-Junior & H. Mikkola (2015) Una revisión de la taxonomía y sistemática de los búhos neotropicales. 29-38 in P. L. Enríquez (ed.) Los búhos neotropicales: diversidad y conservación. ECOSUR, San Cristóbal de las Casas, Chiapas, México.
  • Eisermann, K. & C. Avendaño (2009) Guatemala. Pp. 235-242 In: C. Devenish, D. F. Diaz Fernández, R. P. Clay, I. Davidson & I. Y. Zabala (eds.) Important Bird Areas Americas, priority sites for biodiversity conservation. BirdLife Conservation Series 16. Birdlife International, Quito, Ecuador. PDF
  • Eisermann, K. & C. Avendaño (2007) Lista comentada de las aves de Guatemala - Annotated checklist of the birds of Guatemala. Lynx Edicions, Barcelona, Spain.
  • Eisermann, K. & C. Avendaño (2006) Diversidad de aves en Guatemala, con una lista bibliográfica. Pp. 525-623 In: E. Cano (ed.) Biodiversidad de Guatemala, Vol. 1. Universidad del Valle de Guatemala, Guatemala.
  • Eisermann, K., N. Herrera & O. Komar (2006) Highland Guan (Penelopina nigra). Pp. 85-90 In: D. M. Brooks (ed.) Conserving Cracids: the most threatened family of birds in the Americas. Miscellaneous Publications of the Houston Museum of Natural Science 6. PDF
  • Eisermann, K. (2011) Azure-rumped Tanager Tangara cabanisi: from ornithological enigma to conservation flagship. Neotropical Birding 9: 44-50. PDF
  • Howell, S. N. G. & K. Eisermann (2011) Guatemalan Pygmy-Owl Glaucidium cobanense is a good species. Neotropical Birding 9: 74-76. PDF
  • Eisermann, K. (2011) Citizen science in the ornithology of a developing country: Christmas Bird Counts in Guatemala. Birding 43: 38-47. PDF
  • Eisermann, K. (2010) Citizen Science: Bestandserfassungen in Guatemala. Falke 57: 202-207. PDF
  • Eisermann, K. & C. Avendaño (2009) Important Bird Areas of the Neotropics: Guatemala. Neotropical Birding 5: 4-11. PDF
  • Eisermann, K. (2008) Zerstörung der Natur aufhalten - nicht nur vor der eigenen Haustür: NABU-Regionalverband Erzgebirge unterstützt Schutz des Nebelwaldes in den Yalijux Bergen. NABU-Report Sachsen 2008: 35-36.
  • Eisermann, K. (2007) Important Bird Areas in Guatemala. Winging It 19, no.5: 11. PDF
  • Eisermann, K. (2007) Vogelreichtum in Guatemala: endemische Arten, IBAs und nachhaltige Bewirtschaftung. Falke 54: 385-391. PDF
  • Eisermann, K. (2005) Bericht über das Vogelmonitoring in Guatemala. Rundschreiben des Vereins Sächsischer Ornithologen 24: 15-17.
  • Eisermann, K. (2003) Vom Aussterben bedroht: Die Große Gelbkopfamazone in Guatemala. Gefiederte Welt 127: 206-207.
  • Schulz, U. & K. Eisermann (2001) Kolibri-Beobachtungen in einer Nebelwaldregion Guatemalas. Gefiederte Welt 125: 340-342.
  • Börner, J., K. Eisermann & J. Petke (1996) Hilfe für die Dohle. (Help for the Jackdaw). Mitteilungen des Vereins Sächsischer Ornithologen 7, Beilage 2, 20 p.

Non-peer-reviewed publications, thesis, and technical reports

  • Eisermann, K. (2014) Golden-winged Warbler (Vermivora chrysoptera) in Guatemala: distribution and focal areas for conservation action. Report to American Bird Conservancy, Washington, D.C. PDF
  • Eisermann, K. & C. Avendaño (2007) Áreas propuestas para la designación como IBA (Área importante para la conservación de aves) en Guatemala, con una priorización para la conservación adentro de las IBAs y una evaluación de las IBAs para aves migratorias Neárticas-Neotropicales. Informe final a BirdLife International, Quito, Ecuador. Sociedad Guatemalteca de Ornitología, Guatemala.
    Online at: www.avesdeguatemala.org/iba.htm
  • Eisermann, K. (2006) Evaluation of waterbird populations and their conservation in Guatemala. Final report. BirdLife International, SalvaNatura, Sociedad Guatemalteca de Ornitología, Guatemala. PDF
  • Eisermann, K. (2006) Evaluación de la Avifauna del Sitio Arqueológico Río Amarillo, Santa Rita, Copán, Honduras. Anexo 1 In Komar, O., J. P. Arce, C. Begley, F. E. Castañeda, K. Eisermann, R. J. Gallardo & L. Marineros. Evaluación de la biodiversidad del Parque Arqueológico y Reserva Forestal Río Amarillo (Copán, Honduras). Informe de Consultoría para el Banco Interamericano de Desarrollo. SalvaNATURA Programa de Ciencias para la Conservación, San Salvador, El Salvador y NatureServe, Washington, D.C., USA. PDF
  • Eisermann, K. (2006) Evaluación de la avifauna en las partes que formarán el área protegida trinacional de Montecristo en territorio guatemalteco y hondureño. Anexo 5 In: Komar, O., Borjas, G., Cruz, G. A., Eisermann, K., Herrera, N., Linares, J.L., Escobar, C.E. & Girón, L.E.: Evaluación ecológica rápida del área protegida trinacional Montecristo en territorio guatemalteco y hondureño. SalvaNatura, San Salvador, El Salvador. PDF
  • Avendaño, C. (2001) Caracterización de la avifauna del Parque Nacional Laguna Lachuá y su zona de influencia, Cobán, Alta Verapaz. Tesis de Licenciatura, Universidad de San Carlos, Guatemala
  • Eisermann, K. (2001) Caracterización de la avifauna del Área de Protección Especial Punta de Manabique, Izabal, Guatemala. Fundación Mario Dary, Guatemala.
  • Eisermann, K. (1999) Avifaunistisch-ökologische Untersuchungen in einer Nebelwaldregion Guatemalas als Grundlage für die Entwicklung eines Biomonitoringprogramms. Thesis, University of Applied Sciences Eberswalde, Germany.

Online publications

Research highlights

Links in this section lead to the website of Eisermann & Avendaño Bird Studies Guatemala.


Owls of Guatemala

Latest publication:

Owls of Guatemala
Eisermann, K. & C. Avendaño (2017) The owls of Guatemala. 447-515 in P. L. Enríquez (ed.) Neotropical owls: diversity and conservation. Springer, Cham, Switzerland.

More on my research on owls in Guatemala.


Bird distribution in Guatemala

Latest publication:

Bird diversity Guatemala
Eisermann, K. & C. Avendaño (2018) An update on the inventory, distribution and residency status of bird species in Guatemala. Bulletin British Ornithologists' Club 138: 148-229.

More on my research on bird distribution in Guatemala.


Azure-rumped Tanager

Azure-rumped Tanager in Guatemala
Distribution, habitat use, nesting ecology, and vocalizations of Azure-rumped Tanager.

More on my research on Azure-rumped Tanager.


Savannah Sparrow

Azure-rumped Tanager in Guatemala
Eisermann, K., C. Avendaño & E. Matías (2017) Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala. Bulletin of the British Ornithologists' Club 137: 37-45.

More on my research on Azure-rumped Tanager.


Important Bird Areas in Guatemala

Important Bird Areas Guatemala
Map of Important Bird Areas in Guatemala (from Eisermann, K. & C. Avendaño. 2009. Important Bird Areas of the Neotropics: Guatemala. Neotropical Birding 5: 4-11.)

More on my research on IBAs in Guatemala.


Horned Guan

research on Horned Guan

More on my research on Horned Guan in Guatemala.


Highland Guan

research on Highland Guan

More on my research on Highland Guan in Guatemala.


Resplendent Quetzal

research on Horned Guan
Eisermann, K. (2013) Noteworthy nesting record and unusual bill coloration of Resplendent Quetzal Pharomachrus mocinno. Cotinga 35: 76-80.

More on my research on Resplendent Quetzal in Guatemala.


Threatened species

Bearded Screech-Owl, upgraded from Near Threatened to Vulnerable
Contributions to status evaluations of threatened species, e.g. Bearded Screech-Owl Megascops barbarus, upgraded from Near Threatened to Vulnerable in the BirdLife/IUCN Red List of globally threatened speciesi in 2012.

More on my contributions to Red List status evaluations.


Natural history

natural history Belted Flycatcher
Contributions to the natural history of bird species in Guatemala, e.g. Belted Flycatcher Xenotriccus callizonus.

More on my contributions to the natural history of bird species in Guatemala.

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