Ozkan, Leyla2024-08-232024-08-2320230324-0770https://hdl.handle.net/20.500.12684/14597Egg size in birds is a factor that affects their reproductive success, especially in the size and survival rates of the chicks. Until they learn to find food within a few days after hatching, precocial-type chicks need to use their own biological reserves to supply the energy they expend in walking, running, hiding from predators, etc. The spur-winged lapwing Vanellus spinosus (L., 1758) is a common lapwing species having precocial-type offspring. The species is seen as a summer visitor in Tfirkiye and Bogazkent is one of its important breeding areas in the country. In the present study, the characteristics of the eggs laid in three habitats (agricultural lands, barren lands and meadows) within this area were compared. To this purpose, the eggs were weighed and their width and length were measured. In addition, the volume and sphericity index of the eggs were calculated. We found significant differences in egg measurements between the habitats with eggs laid in meadows being larger, heavier and with greater egg volume than in the other two habitats. However, the hatching rates in the meadows were the lowest (43.8 %) in comparison with the agricultural lands (67.7 %) and barren lands (73.3 %), possible due to potentially higher predation pressure in meadows.eninfo:eu-repo/semantics/closedAccessBogazkentegg characteristicshatching rateprecocial birdsTfirkiyeChick SurvivalParental QualityGrowthGullPloverBirdArticle752209213WOS:001023498600008Q4