What is required for a species like the Eurasian Bullfinch to be considered established in the United States?
Answer
Self-sustaining, breeding populations
For a species to be considered established in the United States, it must possess self-sustaining, breeding populations, which the Eurasian Bullfinch currently lacks.
Related Questions
To which genus do the birds globally recognized as Bullfinches belong?Where is the Eurasian Bullfinch natively widespread?Which North American native finch is sometimes confused with the Bullfinch but belongs to a different genus?What is required for a species like the Eurasian Bullfinch to be considered established in the United States?What color is the breast and cheek of an adult male Eurasian Bullfinch?How do the underparts of a female Eurasian Bullfinch typically compare to the male's vivid coloration?If a Eurasian Bullfinch is found in the US, what are the two most likely origins acknowledged?Where are most recorded occurrences of the Eurasian Bullfinch in the US typically limited?What is the global conservation status of the Eurasian Bullfinch according to major conservation bodies?What is often the hardest part of confirming a US Bullfinch record?