ATHENE CUNICULARIA BURROWING OWL EFICACIA BIOLOGICA ESTRES FITNESS HABITAT SELECTION LECHUCITA DE LAS VIZCACHERAS MODELOS DE SUPERVIVENCIA SELECCION DE HABITAT STRESS SURVIVAL MODELS URBANIZACION URBANIZATION human Animals Birds Ecosystem Fear Humans Models, Theoretical Population Dynamics South America Stress, Physiological Stress, Psychological animal bird breeding ecosystem fear habitat selection