Because it is now half-full of baby food!
Yes, Kate started solids this past week. First with whole wheat cereal once a day, just to learn and practice. Rice cereal is typically the first solid because it is the least likely to cause allergies, but I read a piece in Parents magazine ("The Right Menu for Every Age," June 2009) that said one should feel free to try a different grain.
Kate has definitely shown signs of being ready for solids (and not a moment too soon, since the AAP recommends waiting til 6 months to start), being interested in what we're eating, even to the point of grabbing food off my plate, and seeming hungry more often. So, she was eager to try the spoon, and opened her mouth wide, leaning forward to meet the spoon, but once the food was in her mouth, she'd get a slightly sour expression like she didn't know what to do with it.
After a week of practice, however, she seems to like not just the concept of eating but the food itself. We started applesauce in addition to the wheat cereal today, and she enjoyed that too. Since you're supposed to start only one new food at a time (so you can identify the cause of any allergies right away) I guess we'll stick to wheat and applesauce for the next day or two before adding a veggie.