It may not be allowed in certain areas, particularly with the oldest trees in undisturbed sites (which are the most interesting scientifically).

It can recolonize disused quarries but does not reach the same population density as at undisturbed sites.

It was in natural and undisturbed site, but it was buried impossibly deep.

The Jones family apparently left the site undisturbed for some 230 years, until they sold it to developers in the 1930's.

Until now, foreigners have not had the opportunity to dig in undisturbed sites like the Nihewan Basin.

Ironically, one of the largest undisturbed sites was discovered in a residential area of Winnipeg.

The main house and most of the outbuildings have been demolished by neglect, but the largely undisturbed site remains important for archaeological reasons.

Nest success in undisturbed sites is high, at 80-90%, but much lower in fertilised meadows and on arable land.

At undisturbed sites nests and broods are rarely attacked, as reflected in a high breeding success.

At undisturbed sites, nests and broods are rarely attacked, which is reflected in the high breeding success.