What distinguishes a non-native raptor?

A non-native raptor is distinguished by its absence from the natural ecosystems of a specific region, in this case, Texas. This means that the species is not originally from Texas and has not established a self-sustaining population in that environment. Instead, non-native raptors may originate from other geographic areas and could have been introduced through human activities, either intentionally or accidentally. The implications of having non-native species can vary, including potential competition with native wildlife or changes to local ecosystems.

The other options do not accurately define a non-native raptor. Common presence throughout Texas indicates that a raptor is well-established in that habitat, which would suggest it is native to the area. Predominant occurrence in captivity relates to the confinement of the species rather than its natural status. Likewise, being trained for hunting does not inherently define a raptor's native status; many native species can be trained as well. Thus, identifying a raptor as non-native is solely based on its natural occurrence in Texas.