Bird lovers in the city have reason to rejoice. Now, they can access all the information they need.

Crest Technologies, a software development firm, has released “Birds of Bangalore”, claimed to be the world's first Numerically Linked book.

Based on the 1994 booklet “Annotated Checklist of the Birds of Bangalore” edited by Joseph George and compiled by M.B. Krishna, S. Subramanya and J.N. Prasad of Birdwatcher's Field Club of Bangalore, this book on the city's winged inhabitants combines printed material with multimedia aids.

Released on Saturday in Lalbagh's Golden Jubilee Building, the event was attended by ornithologist and conservationist Zafar Futehally. About 500 copies, to be sold for Rs. 100 each, were made available at the event, with the proceeds going to Lalbagh Horticulture.

The birds listed in Birds of Bangalore are those that have been spotted within a 40 kilometre radius of Vidhana Soudha.

Accompanying the book is a CD containing a pdf version of the book as well as software that enables the retrieval of information specified by a code. Once the CD is installed, four-digit numbers specified alongside entries on each bird listed in the book can be entered into a web browser to access information.