the larger male raises its elaborately crinkled upper wing feathers coverts and tertials in sexual and threat displays.

auckland avian beautiful behaviour black branches breed breeding calm close dark deep ducks easy ecological ecology economic elegant estuaries family feather flocks freshwater gathers graceful gracely grass grasses habitat harmony her herbivorous image lake lakes lakeside land leisure long monogamous morning most neck new one only other paradise park photo ponds relax shore single sites slow spring square sunshine swan swimming territorial together tree view western zealand