That's what the butcher told my mom about the turkey. But yeah. It's hard to estimate the volume of irregular curved objects, and wing thickness in the height direction is not really shown well by photos.

There can be tanks under the baggage compartment too. I once flew on a NASA CV-990 research plane formerly used for passengers commercially, and a guy pulled up the aisle carpeting to reveal a hatch. It opened to the baggage level, and we went down in-flight to fix a connector. He told me there was tank underneath us.

That's what the butcher told my mom about the turkey. But yeah. It's hard to estimate the volume of irregular curved objects, and wing thickness in the height direction is not really shown well by photos.