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Fig. 2 in Wintering Rooks, Corvus Frugilegus (Aves, Corvidae), And Their Helminths In Poltava And Kyiv, Ukraine

Fig. 2. Two-dimensional view of nMDS distribution of helminth infracommunities of Corvus frugilegus from two localities.

Fig. 3 in Wintering Rooks, Corvus Frugilegus (Aves, Corvidae), And Their Helminths In Poltava And Kyiv, Ukraine

Fig. 3. Prevalence (A, B) and relative abundance (C, D) of helminths in the samples collected from wintering rooks, Corvus frugilegus in Poltava (A, C) and Kyiv (B, D).

Fig. 1 in Wintering Rooks, Corvus Frugilegus (Aves, Corvidae), And Their Helminths In Poltava And Kyiv, Ukraine

Fig. 1. Males of Microtetrameres helix Cram, 1927 subspecies: A — Microtetrameres helix helix; B — Microtetrameres helix asiaticus.

Fig. 3 in Spatio-Temporal Structure And Reproductive Success In A Rook (Corvus Frugilegus) Colony

Fig. 3. Relationship between local nest density (number of neighbouring nests within 6 metres) at the date of hatching and hatchling's survival rate (medians). Spearman rank correlation: r s = 0.382, n = 80, P <0.001

Fig. 2 in Spatio-Temporal Structure And Reproductive Success In A Rook (Corvus Frugilegus) Colony

Fig. 2. Relationship between the date of nesting and the elapsed time from nesting to egg laying. Spearman rank correlation: r s = –0.695, n = 102, P <0.01

Fig. 1 in Spatio-Temporal Structure And Reproductive Success In A Rook (Corvus Frugilegus) Colony

Fig. 1. Temporal distribution of nest building and egg laying. Bars represent the number of nests that were started to build (white) and number of nests in which the first egg was laid (grey) grouped into five-day periods. n = 20, mean±SD: 40.00±5.94 and 76.33±8.80 days, respectively

Fig. 4 in Spatio-Temporal Structure And Reproductive Success In A Rook (Corvus Frugilegus) Colony

Fig. 4. Distance of the newly built nests from the centre of the colony, from the edge of the colony (metres) and number of neighbouring nests within 6 metres (medians, full circles) and those of the randomly selected points (medians, empty squares) at each sampling date. 100 random points were selected for each date, sample sizes of the observed nests are shown above the medians. In the marked (*) cases the values of the observed nests dif- fered significantly from the values of the ran- dom points (Mann-Whitney test, P <0.05)

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Figure. Shell height and width of Helix pomatia snails collected by rooks, and of individual snails living in the study area. in Rooks (Corvus frugilegus) dine on snails in Poland

Figure. Shell height and width of Helix pomatia snails collected by rooks, and of individual snails living in the study area.

Fig. 3 in Reduction Of The Breeding Population Of The Rook, Corvus Frugilegus (Aves, Corvidae), In Ukraine: The Example Of The Eastern Part Of The Kyiv Region

Fig. 3. Kernel Density Estimation of number of the rook breeding group in the research area in 1983–1985 (A), and in 2021 (B). The highest density areas are highlighted in red; the lowest density areas are green.

Fig. 2 in Reduction Of The Breeding Population Of The Rook, Corvus Frugilegus (Aves, Corvidae), In Ukraine: The Example Of The Eastern Part Of The Kyiv Region

Fig. 2. The location of Rook colonies and their number in the research area in 1983–1985 (A), and in 2021 (B).

Fig. 4 in Reduction Of The Breeding Population Of The Rook, Corvus Frugilegus (Aves, Corvidae), In Ukraine: The Example Of The Eastern Part Of The Kyiv Region

Fig. 4. Standard Deviational Ellipses for the location of rook colonies and their number in the research area in 1983–1985 and 2021.

Fig. 1 in Reduction Of The Breeding Population Of The Rook, Corvus Frugilegus (Aves, Corvidae), In Ukraine: The Example Of The Eastern Part Of The Kyiv Region

Fig. 1. Geographical location of the study area. The circle is a research territory with an area of 1850 km².