Pigeons (Columba livia) learn to link numerosities with symbols.
Pigeons (Columba livia) learn to link numerosities with symbols.
After responding to each element in varying, successive numerosity displays, pigeons (Columba livia) had to choose, out of an array of symbols, the symbol designated to correspond to the preceding number of elements. After extensive training, 5 pigeons responded with significant accuracy to the numerosities 1 to 4, and 2 …