Some were even drugged while traveling to their point of release, to ensure that they had no way of knowing the outward route.
चतुर कबूतरों ने प्रत्येक बाधा को एक - एक करके पार किया, हालाँकि कुछ बाधाओं के सम्मिश्रण ने उन्हें सफलतापूर्वक अपने घर लौटने से रोका ।