animal animals bird birds blackbird crow feather feathers flight fly grackle grackles Magpie natural nature pajaro raven volar wing wings ba1969 blue gull illustration painting seagull sky watercolor beach black clouds gray ocean reflections sea summer Tan water white cranes Grus grus Hula Valley Israel migrating migration silhouette beak big dive fisher giant kingfisher spotted african feather Expose eye fish eagle head land