In the northern hemisphere, we are very lucky to have about 50 species of warblers. They are mostly vivid in color and sprightly in behavior. As a boy birder, one of my great joys was to watch the warblers during spring migration. They would come in waves, often with several species in one tree, feeding and singing their hearts out. The Canada warbler is distinguished by its bright yellow 'spectacles' and trim black 'necklace.’ - Robert Bateman