Véase la Memoria de la Fiscalía coordinadora de Urbanismo y Medio Ambiente de 2009. Véase sobre este tipo de delitos contra las aves. European Network against Environmental Crime (ENEC). 2015. "Recommendations to eliminate illegal killing and taking of birds. Legal perspective." En European Workshop on Environmental Crime: Illegal killing and taking of birds. 11 de febrero de 2015. Disponible en la web.: http://lawyersfornature.org/i-european-workshop-on-environmental-crime/ y http://www.lawyersfornature.eu/wp-content/uploads/2015/05/Recommendations-on-IKB.-ENEC-workshop.Feb_.2015_Madrid.pdf