nest of red-throated loon (gavia stellata

andromeda arctic avifauna bird birds bog chamaemorus cloudberry dive diver ecology edge egg eggs floating flowering gavia guide hatch hatching house ichthyophagi incubation inhabitants lake lapland laying loon marsh marshes mire nature nest nests ornithology ovoid ovology piscivorous polifolia quagmire redthroated rosemary rubus shape shells stellata swamp swampy testicles testis tundra two water waters wetland