"Young birds rapidly increase their weight from 35 grams at birth (0.77 lbs.) to 1000 grams (2.2 lbs.) for females and 800 grams (1.76 lbs.) for males in less than a month (25 days)."
You misplaced the decimal. 35 grams is 0.077 pounds, or about an ounce and a quarter.
"Young birds rapidly increase their weight from 35 grams at birth (0.77 lbs.) to 1000 grams (2.2 lbs.) for females and 800 grams (1.76 lbs.) for males in less than a month (25 days)."
You misplaced the decimal. 35 grams is 0.077 pounds, or about an ounce and a quarter.