Nile goose feathers

Small white feathers with a black line. Each summer you can find them in large numbers in the grass on Clingendael Estate. Usually they are in the Nile geese's wings. Geese?.... they are in fact ducks and are really quite intimidating. Thank goodness they are not as large as their illustrious ancestors: The dinosaur. Last year I read an article in the newspaper. As there were too many geese [and that they were too agressive], an expert selected families of geese, who were then moved to a more suitable area. This year there are only five pairs on the estate. After a long search I found no more than eight feathers. Hopefully the 'deported' geese families have found a home on another estate. But I fear the worst. I am worried that they are badgering Peter at the Heavenly gate for bread. The feathers found a new home in this mask. Obviously it is a bit intimidating too!