Why are in graylag geese and northern bald ibis some pair partners repeatedly successful parents whereas others are not? The aim of the Citizen Science project NestCams is to discover how different behavioural patterns on the nest affect reproductive success. For this purpose, short videos of the birds on the nest can be analysed online. The videos of the 2018 breeding season are finished and new videos from 2019 are available! Can we get at least 15,000 videos done by the end of April? We will raffle small gifts among all participants. Join us on NestCams and get to know the graylag geese Kendo, Dorothea, Lando, Sturmwind, Lukka, Lenka and Luna. Every single classification counts!