Is there any1 out there who's willing to help me?? Im desperate!!?

My little sisters found 2 eggs on the floor of some park & have brought them home.We wrapped them up in a wooly jumper & i tried to seek answers or information on the net but all that came up was info about chicken eggs! I want to find a site with pics of australian eggs so i can atleast identify them but its impossible. I dnt have a heat lamp or heat pad, just an electric blanket so i dont know if thats good enough?? Also i dnt know how long they were away from there mother & the eggs werent warm but werent cold either so i dnt even know if they're atleast alive!? So if anyone could help me or tell me some useful websites then that would be soo great!! I didnt disturb the nest coz i wasnt there but they were found on the floor uncracked. I just wanna find out if there is any hope at all. I dnt want 2 throw them away if there's life there. Its obviously an Australian native bird & they're a yellowy brown colour with brown spots. Thanks so much 4 any reply at all. :) xx