Here s Why Scientists Are Coloring Birds’ Heads With Markers | National Geographic
0
0
3,419 צפיות·
01/10/24
How do golden-crowned sparrows judge their competition? Previous studies found the patches of yellow plumage on sparrows are indicators of fighting ability. Birds with a bold-colored crown...
להראות יותר
0 הערות
sort מיין לפי
