Nakkas Highway Bird Surveys Report 2021 Author Boyla, Kerem Ali Author Demirhan, Esra text 2021 2021-09-30 KAB Ecology Istanbul, Turkey book 10.5281/zenodo.14533047 14533047 Chroicocephalus ridibundus (Linnaeus 1766) (Black-headed Gull) Compiled from data in tables Table 4 and Table 3. 5 ex.; Sazlıdere Reservoir; 2021-05-03; ( Table 3) • 3 ex.; Sazlıdere Reservoir; 2021-05-16; ( Table 3) • 1 ex.; Sazlıdere Reservoir; 2021-05-23; ( Table 3) • 10 ex.; Sazlıdere Reservoir; 2021-08-21; ( Table 4) • 80 ex.; Sazlıdere Reservoir; 2021-08-29; ( Table 4) • 2 ex.; Sazlıdere Reservoir; 2021-09-11; ( Table 4) • 4 ex.; Sazlıdere Reservoir; 2021-09-12; ( Table 4).