That's good, have you given them the insides of the squash? mine love the seeds and guts of squash and pumpkin. Overgrown cucs from the garden too, cut them open and the love the insides.
I had the tiniest of summer squashes so there really was no squash guts to give them. I'll have to look for bigger ones next time at the farmer's market. They did seem far more keen on the yellow squash versus the green ones, I suppose the yellow color is more eyecatching.