At the daycare center where I work, a co-worker was sitting at a table with one or two children, and visiting with our small white, budgie. This nice little bird, called Sweetie, is very vocal throughout the day, and seems to respond to the childrens' attempts to whistle, and tweet for her.
I joined the group, and we sat quietly enjoying our time while most of the children were napping. One small girl asked me, "Do birds have belly buttons?" Rather than attempt to answer her question, I told her that we could try to find out. It's always preferable to research a question together, rather than providing answers. My first thought would have been that because birds aren't mammals, they wouldn't have belly buttons.
This evening I decided to type this question on Google, and was abit surprised to find several entries on this subject.
The Cornell Laboratory of Ornithology, discussed this question in a section titled, Unusual and Interesting Questions. It seems that the very young birds do have a scar from the cord which attaches the embryo of the bird to the yolk, when in the egg. As the bird matures the scar disappears, so one could say that the baby birds do have belly buttons.
I'm now feeling a little excited about how we might make this subject into a project for the children. There are some good childrens' picture books on belly buttons, both whimsical and factual, so I'll be planning a library trip soon.
This is the best kind of curriculum planning I feel, when it comes from a sincere interest on the part of the actual children in the center. Hmmm, I can just imagine some interesting art, dramatic play, and movement activities that may develop from this....
Below, is a link with another answer to this question. I was really quite surprised to find these entries.
Do birds have belly buttons?