Herrando, S., Llimona, F., Brotons, L., & Quesada, J. 2010. A new exotic bird in Europe: recent spread and potential range of Red‐billed Leiothrix Leiothrix lutea in Catalonia (northeast Iberian Peninsula). Bird Study, 57(2), 226-235.

Herrando, S., Llimona, F., Brotons, L., & Quesada, J. 2010. A new exotic bird in Europe: recent spread and potential range of Red‐billed Leiothrix Leiothrix lutea in Catalonia (northeast Iberian Peninsula). Bird Study, 57(2), 226-235.