Tomatoes (Solanum lycopersicum) originated in Central and South America and is a member of the nightshade (Solanaceae) family. The plants grow as vines, in a series of branching stems. The leaves and stems of this plant are the toxic parts, which contain glycoalkoloids, specifically solanine and demissine. Birds would need to eat large amounts to start showing signs of poisoning (approximately 2.5 mg of parts of the plant per kg of body weight).
