Creatures invading our habitat garden
Generally, creatures that are native to an area belong in that ecosystem, whether they're appealing to humans or not.
But some native creatures—generally due to the way people have changed the environment—have become out of balance in their native ecosystems:
A robin getting a (yes, non-native!) worm from our path
Non-native creatures often cause problems because the native plants and animals haven't evolved with them and so have few defenses against them. These include:
The remains of a cardinal — courtesy of a cat
And don't forget CATS, another non-native invasive creature wreaking havoc in our yard and beyond.