Hey if you like this blog (and I guess you probably do) you might like to look at these:
Skinny in a Land of Plenty is a blog by a Boston resident named Ajay who has come along on some Urban Nature Walks, and gone on some of his own. Great photography.
LA's Urban Nature is the blog from the Natural History Museum of Los Angeles. My old pal
rockbalancer writes many of the posts.
Hit Me With Your Nature Stick is a nature blog by a married couple of my acquaintance, nay friendship, who indulge themselves in nature walks specifically to find reptiles and amphibians. They use foul language and get themselves bit alarmingly often.
Enjoy.