Wallcreeper Tichodroma muraria was observed during cold winters in different parts of Croatia, along the Adriatic coast, on islands as well as inland. Their origin remains unknown, but they may belong to the population nesting in the Alps or in Dinaric parts of Bosnia and Herzegovina and Montenegro. The overwintering along the Adriatic coast was explored during field observations, but also from the literature and museum data. The field investigations were carried out in Istria, North Dalmatia, Paklenica NP, Kornati NP and central Dalmatia, Krka NP. In total, 96 observations were made: 35 specimens from museum collections and literature and 61 during field research. The Wallcreeper was observed in Velika and Mala Paklenica canyons in Paklenica NP during cold winters, but not during milder winters. In the Paklenica NP, the earliest individuals were observed on 10 Oct and the latest on 28 Apr. On the complete east Adriatic coast and in Croatian inland, the earliest record was made on 6 Sep and the latest on 2 May. There are 5-10 individuals overwintering in Paklenica National Park.

The Croatian population of the eagle owl Bubo bubo (Linnaeus, 1758) is estimated at 800-1200 breeding pairs with the majority of population breeding in the Mediterranean region, along the eastern Adriatic coast. The main aims of this work were two-fold: (1) to determine the eagle owl territorial densities in the central part of Mediterranean Croatia; and (2) to examine landscape composition and configuration of the study plots and consider possible reasons for differences in recorded densities. The abundance of the eagle owl was surveyed from 2001 to 2006 within three plots of similar size (a total survey area of 246 km 2 ): two plots were on the mainland and one on the archipelago at about 16 km from the coast. The playback method was used to stimulate eagle owl territorial behaviour and to determine the locations of their territories. Territorial densities ranged from 4.5 to 26.2 pairs/100 km 2 , with the highest density being recorded on islands. We suggest that this high density is a result of good foraging conditions, especially year-round availability and high abundance of the yellow-legged gull Larus michahellis J. F. Naumann, 1840 and the brown rat Rattus rattus (Linnaeus, 1758), together with low risk of human-induced mortality.