ATEMASOVA, T.; DEVYATKO, T.; ATEMASOV, A. Egg size Variation in the Collared Flycatcher (Ficedula albicollis Temminck, 1815) . The Journal of V.N.Karazin Kharkiv National University. Series «Biology», v. 44, p. 56-77, 24 Jul. 2025.