Yes...this is because many grevilleas and banksias have flowers containing nectar which attracts honeyeating birds (so do lots of other plants by the way, including correas, eucalypts and callistemons). However, a garden comprised predominantly of these nectar-producing species may result in certain types of birds dominating (e.g. noisy miners, which actively discourage other, more timid species). To minimize this, it's a good plan to choose plants that encourage a wide range of birds.
There are, of course, many other birds apart from honeyeaters and there are other reasons why birds might be attracted to a particular garden. To attract a variety of birds it's a good idea to mix many different plants of different heights and growth habits so that shelter and nesting sites are available. For example, planting lots of small, bushy shrubs, including those with prickly foliage, will provide protection for smaller insect and seed eating birds, as well as for honeyeaters.
|Scarlet robin (left) and New Holland Honeyeater (right) are two smaller birds that appreciate a variety of plants for cover and food. Photos from Wikimedia Commons: Scarlet Robin by 'Noodle Snacks', reproduced under the Attribution ShareAlike 3.0 License. New Holland Honeyeater by Louise Docker, reproduced under the Attribution 2.0 License|
It should be remembered also that some birds are fruit eaters and many Australian plants, particularly those from the rainforest, will help attract these. And, don't forget a bird bath - you'll be surprised and entertained by the passing parade of bird species eager for a dip!