These colorful Gregg Gift Company "This is the Day Birthstone Birds" were made to celebrate birthdays. The egg colors represent the colors associated with the gem stones for that month. Traditional Birthstone are: January - Garnet, February - Amethyst, Hyacinth, Pearl, March - Bloodstone, Jasper, April - Diamond, Sapphire, May - Emerald, Agate, June - Cat's Eye, Turquoise, Agate, July - Turquoise, Onyx, August - Sardonyx, Carnelian, Moonstone, Topaz, September - Chrysolite, October Opal, Aquamarine, November - Topaz, Pearl and December - Bloodstone, Ruby. The Modern Birthstones are: January - Garnet, February - Amethyst, March - Aquamarine, April - Diamond, May - Emerald, June - Moonstone, Pearl, July - Ruby, August - Peridot, September - Sapphire, October Opal, Pink Tourmaline, November - Topaz, Topaz, Citrine and December - Turquoise, Zircon, Tanzanite, Blue Topaz. We only have a few of these left. The little resin birds include Green Creeper, Baltimore Oriole, Purple Finch, and Oregon Junco