The color black and scavenging don’t typically signify love. But black vultures stay together forever once mating occurs. (Dawn Scranton/Flickr) The color black and the scavenging vulture don’t typically signify love. But the black vulture — which relies on the strong nose of its turkey vulture cousin to find food — is one of the few birds that stays together forever once mating occurs. On top of that, this species has a strong family life once it has chicks.