No one doubts that nesting birds are magnificent architects , but until now it was thought that their ability was inexorably determined by genes and instinct.
Therefore, reason or experience did not intervene. However, a new study published in the specialized journal "Proceedings of the Royal Society B" suggests that behind this faculty there is a more sophisticated cognitive process .
The scientists tested a group of Mandarin diamond or zebra finches (Taeniopygia guttata), giving them a choice between rigid and flexible ropes to build their homes . The former were undoubtedly better, because if they resorted to them they needed less material.
They first divided the birds into two groups. One of them only had flexible cords, and the other was supplied with rigid ones. After they had made their nests like this, they offered both groups of the two types, and all ended up opting for the most effective ropes : the animals that had used the "soft" before quickly realized what was suitable for them after trying the new one. raw material.
The bottom line is that, as with humans, learning plays an important role in building bird decision-making.
