Zachary DeBruine, at birdventurebirding.com, has developed a simple tool that will allow you to add a very specific image from Google Maps detailing the exact location of a bird you have found. This can be a big help to others that go to look for the bird. For example, here is the location of the exact Himalayan Blackberry bush at Lytle Ranch where I found a Harris's Sparrow a couple of weeks ago.
Generated by eBirdGM
When this image is embedded in a checklist, it includes a link to the location on Google Maps. So if you wanted to look for this bird, you could get directions from your house to this specific shrub with just a few clicks!
Here are a few sample checklists with embedded maps:
Harris's Sparrow, Lytle Ranch
Blue Jay, Smithfield
Greater White-fronted Geese, Logan Polishing Ponds
For thorough directions on how to use this tool, and for the tool itself, see eBirdGM.