As it is impossible to come enough close to birds, binoculars are the most basic equipment for close observation. In open areas, distant lands, telescopes made for this aim are also very beneficial. During the observation period, a note book, which is required for registry, should not be forgotten. Also a guide book including bird species will be very beneficial.
During the observation, there are some basic rules to be obeyed. First of them is not to disturb the birds. You should not enter their nesting areas, and take eggs or nest material. At the end of the observation no property should be left within the region.