http://www.parrots.org/pdfs/all_about_parrots/reference_library/behaviour_and_environmental_enrichment/feather_picking_frustrations.pdf (http://www.parrots.org/pdfs/all_about_parrots/reference_library/behaviour_and_environmental_enrichment/feather_picking_frustrations.pdf)
un bon article, en anglais, illustré et intéressant !