RARE THREE POUND RUBY THROATED ARGENTINE HUMMING BIRD by artist Denise BledsoeMixed media, Bird from tail to bill: 7, total size of sculpture, 12 tall His story. Researchers discovered that humming birds can double their fat mass in preparation for their migratory ocean crossings, and then expend the entire calorie reserve from fat during the non stop crossing when food and water are unavailable. The Three Pound Humming Bird multiplies its fat mass by many times in preparation for travel to just about anywhere they wish. ** **