鸬鹚使结构树套入. 鸬鹚在多瑙河三角洲的一棵树，罗马尼亚筑巢

鸬鹚在多瑙河三角洲的树上筑巢

鸬鹚在枯死的松树上筑巢

鸬鹚在多瑙河三角洲的树上筑巢

鸬鹚在多瑙河三角洲的树上筑巢

鸬鹚在 Ship John Shoal 灯塔上筑巢

great cormorant nests clustered in leafless trees along a winter wetland showing the dense structure of breeding colony built bare

great cormorant nests clustered in leafless trees along a winter wetland showing the dense structure of breeding colony built bare

great cormorant nests clustered in leafless trees along a winter wetland great cormorant nests clustered in leafless trees along a

great cormorant nests clustered in leafless trees along a winter wetland showing the dense structure of breeding colony built bare

great cormorant nests clustered in leafless trees along a winter wetland showing the dense structure of breeding colony built bare

great cormorant nests clustered in leafless trees along a winter wetland great cormorant nests clustered in leafless trees along a

great cormorant nests clustered in leafless trees along a winter wetland great cormorant nests clustered in leafless trees along a

一棵被鸬鹚巢穴覆盖的树，位于白雪皑皑的冬季景观中，说明了筑巢群落对环境的影响

许多鸬鹚的巢穴在树上

沼泽景观覆盖着积雪，有枯树和鸬鹚巢穴

枯树与鸬鹚巢穴

日落时分多瑙河三角洲的科莫兰特巢

日落时分多瑙河三角洲的科莫兰特巢

日落时分多瑙河三角洲的科莫兰特巢

日落时分多瑙河三角洲的科莫兰特巢

裸树，有珊瑚色的巢穴，在沼泽地的绚丽夜空中

死松树上的珊瑚蚁巢

裸树上布满鸬鹚巢，在阴云密布的天空下

死松树上的珊瑚蚁巢

在雪报道的有雾的冬天沼泽风景用死的树用鸬鹚巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

死松树上的珊瑚蚁巢

松林中的黑珊瑚巢

沼泽景观，覆盖着积雪，带有死树和鸬鹚巢的池塘

松林中的黑珊瑚巢

秃树上停着鸬鹚巢，背景是色彩鲜艳的傍晚天空

黑鸬鹚在松树林中筑巢

沼泽风景和盖在雪和水池用死的树用鸬鹚巢

沼泽风景和盖在雪和水池用死的树用鸬鹚巢