Also try to include a birdbath with a trickle or a steady drip, drip, drip - the sound is irresistible to wildlife. Next, think in terms of food. Seed, suet, and hummingbird feeders will help draw birds to your yard, as will plants that provide the foods they seek in nature. Provide shelter Wild creatures also need shelter, be it a bush for a bird to perch in or a small hideaway for a toad. Even if you don't plan to plow up your lawn, consider expanding the size of your flower beds to increase the amount of cover in your yard.
Curved beds are better than straight lines.
When choosing plants, try to include a number of native species. Not only will they need less attention, but they've co-evolved with the local fauna and often serve as a powerful attractant. Remember, too, that dense shrubbery and mature trees add greatly to the landscape value from an animal's point of view. Shelter is important in a pond as well, be it a rock for a tadpole to wiggle behind or a lily-pad to shade a fish. The key concept here is diversity.