G. R.  Angehr, Christian, D. G., and Aparicio, K. M., ?A survey of the Serran{\'?a de Jungurudó, an isolated mountain range in eastern Panama?, Bulletin of the British Ornithologists? Club, pp. 51-62, 2004.

H. F.  Greeney and Gelis, R. A., ?Breeding records from the north-east Andean foothills of Ecuador?, Bulletin of the British Ornithologists? Club, vol. 127, pp. 236-241, 2007.

K. S.  Sheldon and Greeney, H. F., ?Nest and parental care of the Beryl-spangled Tanager (Tangara nigroviridis) in northeastern Ecuador?, Ornitolog{\'?a Neotropical, vol. 18, pp. 603-606, 2007.

A.  Arcos-Torres and Solano-Ugalde, A., ?Notas sobre la anidación de tres especies del género Tangara (Thraupidae: Aves) en el noroccidente de Ecuador?, Bolet{\'?n SAO, vol. XVII, pp. 133-137, 2007.

K.  Eisermann, López, G., Berry, J., Lux, Jd. León, and Burge, A., ?Vocalisations and juvenile plumage of the Azure-rumped Tanager.?, Cotinga, vol. 33, pp. 23-26, 2011.

H. F.  Greeney, Juiña-J., M. E., Harris, J. B. C., Wickens, M. T., Winger, B., Gelis, R. A., Miller, E. T., and Solano-Ugalde, A., ?Observations on the breeding biology of birds in south-eastern Ecuador?, Bulletin of the British Ornithologists? Club, vol. 130, pp. 61-68, 2010.

K.  Eisermann, Arbeiter, S., López, G., Avendaño, C., and Lux, Jd. León, ?Distribution, habitat use, and implications for the conservation of the globally threatened Azure-rumped Tanager Tangara cabanisi in Guatemala.?, Bird Conservation International, vol. 21, pp. 423-437, 2011.

K.  Eisermann, Arbeiter, S., López, G., Avendaño, C., J. Lux, deLeón, Burge, A., A. Lux, deLeón, and Buchán, A., ?Nesting ecology of the Endangered Azure-rumped Tanager (Tangara cabanisi) in Guatemala.?, Ornitolog{\'?a Neotropical, vol. 22, pp. 39?57, 2011.

H. F.  Greeney, Martin, P. R., Gelis, R. A., Solano-Ugalde, A., Bonier, F., Freeman, B., and Miller, E. T., ?Notes on the breeding of high-Andean birds in northern Ecuador?, Bulletin of the British Ornithologists? Club, vol. 131, pp. 24-31, 2011.