Divisions within the Berejiklian government have delayed the relocation of brumbies in the Kosciuszko National Park even as numbers of the feral horses continue to rise.

A year after it shocked scientists and environmental groups by passing a law to protect the introduced animals in one of NSW's biggest national parks, the government has now likely missed its winter window to remove horses for a second year in a row.

Feral horse numbers in the Kosciuszko National Park are apparently rising rapidly - but the Berejiklian government appears to have missed another chance to reduce them. Credit:Justin McManus

Stymieing the relocation efforts has been a delay in agreement within the government on the membership of a new independent community panel supposed to advise on horse management.

Matt Kean, the Energy and Environment Minister, signed off on who he wanted more than a month ago, only to have John Barilaro, the Nationals leader and Deputy Premier hold off submitting his list, government sources told the Sun-Herald.