Dynamics of heat transfer to cold eggs in incubating bantam hens and a black grouse

�. T�ien^{a b}✉

1. ^aDepartment of Arctic Biology, University of Tromsø, N-9037, Tromsø, Norway
2. ^bDivision of General Physiology, Department of Biology, University of Oslo, Blindern, P.O. Box 1051, N-0316, Oslo, Norway
3. ✉Corresponding author