camouflage

Hu keeps camouflage clothing in his kit, but warns that dressing like a soldier could draw unwanted attention.

On Sunday, armed federal agents in masks and camouflage marched the streets, targeting street vendors and construction workers as they stopped residents and took them into custody.

Prof Stevens said: "If they're increasing, something in their environment may have changed, perhaps fewer predators, or better camouflage in new habitats."

In the grainy footage, Mr Phillips could be seen leading his children through the rugged terrain, all wearing camouflaged clothing, raincoats and large backpacks.

In the video, Phillips and the children were wearing camouflaged clothing and each was carrying their own packs.