Five species of sexton beetle Nicrophorus are recorded in Highland.  Most are easily recognised as sextons by their large size (10-25mm), broad orange stripes across the wing-cases (one species is all black), and clubbed antennae.  Separating the species can be a little more difficult.  The related Shore Sexton-beetle has no clubs on the antennae, while the Red-breasted Carrion-beetle is very distinctive.

Sexton beetles (or burying beetles) are remarkably efficient disposers of carcases, but are even more noteworthy as they are among the few non-social insects to care for their young.  Both sexes are involved in complex child-care behaviour (see the Wikipedia link for details).  They are easily discovered attending carcases of anything from shrews to deer, but are frequently found in moth-traps.

Most sextons are found covered in phoretic mites
Poecilochirus which are being carried to the beetle's brood chamber.  There they breed, possibly in a mutualistic relationship with the beetles as they feed on fly larvae which might compete with the beetles.  However, at least one species seems to feed on the beetle eggs (see link below).