Wild pollinators often visit many plant species and plants are visited by many pollinator species. Many plants are dependent on pollination from a pollinator. Plants fall into pollination syndromes that reflect the type of pollinator being attracted. Hand pollination by a human pollinator is a solution. It can be part of butterfly gardening and pollinator/honey-bee habitat gardens. Some endangered plant species are so because of shrinking pollinator populations. The moth is a flower pollinator. Among the more important moth pollinator groups are the hawk moths of the family Sphingidae. Their larvae are thought to feed on the larvae of the pollinator wasp. Distinguishing between a legitimate pollinator and a nectar robber can be difficult. Pesticide losses are a major factor in pollinator decline. Many plants have evolved symbiotic relationships with a single pollinator. Flowering plants that have the same pollinator also form a guild. They are the only North American game species that is also a migratory pollinator. This allows pollinator species to survive together under harsh conditions.