Abstract
Abstract Egg and clutch size of Whiskered Terns (Chlidonias hybrida) in relation to their location within the colony were investigated at Jeziorsko Reservoir, central Poland. All nests (n = 125) in the colony were individually marked and mapped using a Global Positioning System. Four nest clusters were distinguished within the colony based on the patchy distribution of floating vegetation which delineated potential nesting areas. Early breeding Whiskered Terns nested in more central and denser parts of nest clusters and late breeders nested in more peripheral zones of the clusters (trend analysis: F = 20.47, df = 1, P < 0.001). Pairs which nested closer to the centers of clusters had larger clutch sizes (trend analysis: F = 5.70, df = 1, P = 0.019), but there was no relationship between clutch size and distance to the colony center (F = 0.38, df = 2, P = 0.69). Edge clutches had higher coefficient of variation in egg volume in comparison to more central clutches (trend analysis: F = 5....
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
