Paarung von Schwänen
Palabras clave
alpen,
mount,
bodensee,
duck,
cygnet,
see,
forenoon,
cygnet,
mating,
mating season,
ritual,
reproduction,
fertilization,
amalgamation,
combat,
spring,
rut,
male,
female,
white,
animal,
wildlife,
water bird