 The United Nations ' Food and Agricultural Organization lists the Kaimanawa horses as a herd of special genetic value that can be compared with other groups of feral horses such as New Forest ponies , Assateague ponies , wild Mustangs , and with free @-@ living zebras . Kaimanawas are of special value because of their low rate of interaction with humans . This lack of interaction may result in a herd with more wild and fewer domestic characteristics , which is of special interest to researchers . Between 1994 and 1997 , students from Massey University studied a population of around 400 Kaimanawa horses to learn their habits and herd dynamics . A 2000 study found that although sometimes there are more than two stallions in Kaimanawa horse herds , only the two stallions highest in the herd hierarchy mate with the herd females . This differs from other feral horse herds , some of which have only one stallion that mates with mares , while others have several stallions that sire foals . 
 The United Nations <a href='null_genetive' title='1'><mark>'</mark></a>Food and Agricultural Organization <a href='uninflect' title='2'><mark>lists</mark></a> the Kaimanawa horses as a herd of special genetic value <a href='null_relcl' title='3'><mark>that</mark></a>can be compared with other groups of feral horses such as New Forest ponies , Assateague ponies , wild Mustangs , and with free @-@ living zebras . Kaimanawas are of special value because of their low rate of interaction with humans . This lack of interaction may result in a herd with more wild and fewer domestic characteristics , which is of special interest to researchers . Between 1994 and 1997 , students from Massey University studied a population of around 400 Kaimanawa horses to learn their habits and herd dynamics . A 2000 study found that although sometimes <a href='dey_it' title='4'><mark>there</mark></a> are more than two stallions in Kaimanawa horse herds , only the two stallions highest in the herd hierarchy mate with the herd females . This <a href='uninflect' title='5'><mark>differs</mark></a> from other feral horse herds , some of which <a href='got' title='6'><mark>have</mark></a> only one stallion <a href='null_relcl' title='7'><mark>that</mark></a><a href='uninflect' title='8'><mark>mates</mark></a> with mares , while others <a href='got' title='9'><mark>have</mark></a> several stallions <a href='null_relcl' title='10'><mark>that</mark></a>sire foals . 
The United Nations  Food and Agricultural Organization list the Kaimanawa horses as a herd of special genetic value can be compared with other groups of feral horses such as New Forest ponies , Assateague ponies , wild Mustangs , and with free @-@ livin zebras . Kaimanawas are of special value because of their low rate of interaction w humans . dis lack of interaction may result in a herd with more wild and fewer domestic characteristics , which is of special interest to researchers . Between 1994 and 1997 , students from Massey University studied a population of around 400 Kaimanawa horses to learn their habits and herd dynamics . A 2000 study found dat although sometimes it is more than two stallions in Kaimanawa horse herds , only da two stallions highest in tdaherd hierarchy mate with the herd females . This differ from other feral horse herds , sum of which got only one stallion mate with mares , while others got several stallions sire foals .