I notice that in the TOS website's "Official Checklist of the Birds of Tennessee" as of November 4, 1999, that the categories used for frequency are the following: Regular, Casual, Accidental, Extirpated and Extinct In John C. Robinson's "An Annotated Checklist of the Birds of Tennessee" he uses three different categories: Status, Abundance and Seasonal occurrence. These three categories are broken down into still smaller categories. For example I have gleaned the following from his book for the categories (statewide occurrence only): Status: Regular Abundance: Common Seasonal occurrence: Permanent Resident These are the species fitting this criteria according to John's book: Killdeer, Rock Dove, Mourning Dove, Downy Woodpecker, Blue Jay, American Crow, Carolina Chickadee, Tufted Titmouse, Carolina Wren, American Robin, Northern Mockingbird, European Starling, Eastern Towhee, Field Sparrow, Northern Cardinal, Red-winged Blackbird, Eastern Meadowlark, Common Grackle, Brown-headed Cowbird, American Goldfinch, and House Sparrow Is there an updated breakdown of TN birds similar to the categories used in John's book somewhere online including seasonal occurrence or does everyone basically just go by his book? It seems like some species might warrant a higher category of occurrence - for instance House Finch - than what John had for them in 1990. According to the liner notes it says that (as of 1990) he "is now a wildlife biologist for the USDA Forest Service in Hayward, Wisconsin." Coincidentally, my grandparents used to own a resort on a lake near Hayward, Wisconsin. We used to go up there in the summer alot when we were kids. Very fond memories of that time and place. Barry Jernigan Murfreesboro, Rutherford Co, TN