As it name suggests, the gray heron's feathers are mostly gray.

In the culminating subalpine areas, slices may also be found (Perdix perdix).

Even in the foothills model forest the future of the grizzly bear appears bleak.

Sea turtles are vulnerable to predators at all life stages.

Grasshoppers are vulnerable to various predators during each stage of their life cycle.

The populations of familiar farmland birds such as skylarks and grey partridge are literally collapsing, with a respective decline of -50% and -90% in their numbers over the last 25 years.

Declines of some farmland bird species in Europe have been attributed to pesticide effects on prey availability (e.g., Gray Partridge Perdix perdix; Potts 1997).

Declines of some farmland bird species in Europe have been attributed to pesticide effects on prey availability (e.g., Gray Partridge Perdix perdix; Potts 1997).

Chukar, Grey Partridge and Himalayan Snowcock have been successfully introduced to the Great Basin, although the latter has only thrived in the Ruby Mountains.

Chukar, Grey Partridge, and Himalayan Snowcock have been successfully introduced to the Great Basin, although the latter has only thrived in the Ruby Mountains.

The Historic Decline of the Grey Partridge (Perdix perdix)

Exotic species, including chukar, grey partridge, and Himalayan snowcock, have been successfully introduced to the Great Basin, although the latter has only thrived in the Ruby Mountains.

A statistical analysis of the relationship between red fox Vulpes vulpes and its prey species (grey partridge Perdix perdix, brown hare Lepus europaeus and rabbit Oryctolagus cuniculus) in Western Germany from 1958 to 1998.

A statistical analysis of the relationship between red fox Vulpes vulpes and its prey species (grey partridge Perdix perdix, brown hare Lepus europaeus and rabbit Oryctolagus cuniculus) in Western Germany from 1958 to 1998," 16(1)

In particular, she developed with some colleagues a large-scale field study to investigate unintended effects of current plant protection products (PPPs) on mortality and reproduction in the Grey partridge (taken as a case study).