mixed flock of waders in spring flight

action active alpina assorted bif birds calidris dunlin dunlins dynamic fast flight flock fly flying freedom glide group hybrid light lobatus mingled miscellaneous mixed motion nature open pack phalarope phalaropes phalaropus philomachus promiscuous pugnax quick rednecked ruff ruffs sandpiper sky slide slip small space spreaded spring stint stretched sweet wader waders wading wild wildlife wing