Crows have been seen swooping down on pedestrians near Bishan Street 12 in Singapore. <br /><br />The birds are particularly protective and may attack when they sense that their young are threatened. <br /><br />However, the National Parks Board (NParks) said it is working with Bishan-Toa Payoh Town Council to reduce the crow population as house crows are an invasive species and threaten Singapore's native biodiversity.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
