The Humboldt penguins, that were brought to the Byculla zoo in July 2016, continue to bring in revenue for the civic body as it continues to be the star attraction. Between April 2017 and July this year, the Brihanmumbai Municipal Corporation has collected revenue worth Rs 10.57 crore.

While there is a steady stream of visitors, over the past three months, the numbers of visitors have dropped due to the rains. From 1,03,826 visitors in April this year, the number dropped to 34,400 visitors in July. The collection was the highest in May amounting to Rs 57.19 lakh.