ability action active agility air aloft america anatidae animal animals anseriformes atlantic avian backlit bay behavior biology bird birds black blackwater blue branta branta canadensis cambridge canada canada goose canadensis chesapeake clear cold color colorful colour colourful conservation conserve county creek dawn day daybreak direction dorchester eastern ecology environment feathered flight flock flocks fly flying flyway form formation fowl free freedom gander geese goose gray grey group horizontal journey long marsh maryland md mid migrate migrating migration migratory mood motion move movement multiple national natural nature no nobody november october only ornithology outdoors passage people refuge remote river scenery scenic seasonal serene serenity shore sky social south speed speeding spread strength strong take taking tidal tide together togetherness tranquil tranquility tranquillity tributary up usa view water waterfowl wild wildlife wing winged wings winter yearly