This month's rainy weather has sometimes made birdwatching a challenge. Flowers, however, have been benefiting from all the rain creating a profusion of colors and fragrances throughout Brooklyn. English Hawthorns, a member of the Rosaceae family, is a favorite. I pass a pair of these trees whenever I enter Prospect Park near the Litchfield Mansion. Their rosy-pink blossoms caught my eye one rainy morning.