Editing Roadkill (section)

===Scavengers===
One rarely considered positive aspect of roadkill is the regular availability of carrion it provides for scavenger species such as vultures, crows, ravens, foxes, opossums and a wide variety of carnivorous insects. Areas with robust scavenger populations tend to see roadkilled animal corpses being quickly carried off, sometimes within minutes of being struck. This can skew data and cause a lower estimation of the number of roadkill animals per year.<ref>{{cite journal |last1=Santos |first1=Sara M. |last2=Carvalho |first2=Filipe |last3=Mira |first3=António |title=How Long Do the Dead Survive on the Road? Carcass Persistence Probability and Implications for Road-Kill Monitoring Surveys |journal=PLOS ONE |date=27 September 2011 |volume=6 |issue=9 |pages=e25383 |doi=10.1371/journal.pone.0025383 |pmid=21980437 |pmc=3181337 |bibcode=2011PLoSO...625383S |doi-access=free }}</ref> In particularly roadkill-prone areas, scavenging birds rely on roadkill for much of their daily nutritional requirements, and can even be seen observing the roadway from telephone poles, overhead wires and trees, waiting for animals, usually  squirrels, opossums and raccoons to be struck so they can swoop down and feed. However, such scavengers are at greater risk of becoming roadkill themselves, and are subject to [[evolutionary pressure]] to be alert to traffic hazards.

In contrast, areas where scavengers have been driven out (such as many urban areas) often see roadkill rotting in place indefinitely on the roadways and being further macerated by traffic. The remains must be manually removed by dedicated disposal personnel and disposed of via cremation; this greatly increases the public nuisance inherent to roadkill, unnecessarily complicates its disposal, and consumes additional public money, time and fuel that could be spent on other roadway maintenance projects.{{citation needed|date=December 2019}}