\nThe competitive exclusion principle states that two animals cannot occupy the same niche – ie, role – in the same environment: one always out-produces the other, and takes sole occupancy. I’ve mentioned this idea before, here<\/a>.<\/p>\n What about crows and ravens? We have lots of both around here, and they seem, at first, to share a niche.<\/p>\n Both birds are scavengers and clever, opportunistic feeders. However, it turns out that crows are more foragers, while ravens, hunters. In a small city or town, you might see both, but in fact, ravens tend to favour wilderness, while crows are attracted to people.<\/p>\n Source:<\/p>\n allaboutbirds.org<\/a><\/p>\n allaboutbirds.org<\/a><\/p>\n sciencedirect.com<\/a><\/p>\nJack of Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.\n\n","protected":false},"excerpt":{"rendered":" Self-tutoring about birds and ecology: the tutor mentions ravens and crows. The competitive exclusion principle states that two animals cannot occupy the same niche – ie, role – in the same environment: one always out-produces the other, and takes sole …<\/p>\n