Originally Posted by
Shadowman
For your macro needs it depends on what you want to photograph. The 60mm is good for product photography, 90-105mm flowers, insects, 180-200mm insects. You have other less costly options before making the move towards the 105mm, but keep it in your dream box, you can try the reverse lens technique (adapter less than $12.00) or you can try extension tubes (less than $12.00). Both options take some time getting used to but there are lots of resources available to get you through the discovery phase.
Regarding the bird photography, I can't see why you can't get some good shots with the 70-300, you just need to lure the birds and give them an incentive to sit still while you fire away.