Fig. 4. Clutch size of Collared Flycatcher and a date of transition of average temperature through +5 °C (meteorological spring beginning).
A. A. Atemasov
V. N. Karazin Kharkiv National University, Svobody Square, 4, Kharkiv, 61022 Ukraine; & National Park 'Homilshanski Lisy', Monastyrska St., 27, Koropove, Kharkiv Region, 63437 Ukraine & National Park 'Slobozhanskyi', Zarichna St., 15 a, Krasnokutsk, Kharkiv Region, 62002 Ukraine *Corresponding author
T. A. Atemasova
V. N. Karazin Kharkiv National University, Svobody Square, 4, Kharkiv, 61022 Ukraine;