Impression Evidence Impression evidence includes any markings produced when one object comes into contact with another, leaving behind some kind of indentation or print. Such evidence encountered includes footwear impressions, tyre marks, and markings created by tools and similar instruments. Footwear Impressions Whenever an individual takes a step, a footwear impression may potentially be left behind on the surface.
Invalid Hatch Boundaries. When a hatch boundary cannot be determined, it might be because the specified internal point is not within a fully enclosed area. Red circles are displayed around unconnected endpoints of the boundary to identify gaps in the hatch boundary. NoteIf a boundary is outside a screen display, you must zoom out to ensure the point selected is within a fully enclosed area.
Concealment Tactics. Everything crows do during nesting season is designed to keep their eggs and chicks safe from detection by predators. When crows build nests in trees, they conceal them so carefully that you might not see them at all until the leaves fall. For another measure of protection, crows build decoy nests.