If there is no evidence of a leak it must be burning it. Watch the exhaust for smoke when accelerating after descending a long hill.

Does that sound like its burning to much?

Impossible to answer as you do not say how much oil you put in for how many miles.

I suspect you have the 1.6 Zetec engine. We've had one since 29,000m - bog standard semi-synth 5-30 oil and filter every 10-12k. My records show that lately (now at 112k) it has required 3 x 500mls between changes (I wait till it's at or just below the minimum mark) so that's about 1l every 6k miles which I think is pretty good for a well looked after 15yr old engine which has gone round the world x 4.

I suggest you wait till the level is dead on the minimum mark, put 500mls in, and see how many miles it does before it gets back down to the mark. You should get at least 1000miles unless it is very old and worn. Mine is probably better than most as I am obsessional about leaving it overnight to drain the last few mls of dark gunge that sticks to the side of the engine (like tomato sauce bottle - far more important than changing oil every 365 days).