They arrived today. Slightly smaller than the Schleich cows and not as chubby either. Closer to 1:22.5.

Source: http://www.shopatron.com/products/category/Safari+Farm/740.0.1.1.33307.70682.33327.0.0

they look good.
are they 1:24?

No, they are closer to the 1:21 or there abouts mark.

Hans the live stock look really good.
Nice variety.