Now, here's a weird thing. Mine go absolutely crazy for plain old ice! And it's definitely learned behaviour. One of my ex-batts, Maud, used to lose her mind if I put crushed ice out when it was really hot outside. She'd do the same as Lydia and stand guard over it. Now, when our old freezer broke and became 'defrost every couple of days' instead of 'no defrost', Maud would gobble the ice if I chipped it out and they were in the kitchen with me - no matter the weather outside! Clara decided she wanted it as well so she started begging for it too. Well, Ferdy was watching all this with great interest and clearly saw an opportunity. He started tidbitting with it and offering it to Clara and Maud. Pretty soon they were all loving it. Crazy behaviour, huh?