This finch may have displaced from America to the parental species Eurasian siskin. The pine siskin ("Spinus pinus") is a North American bird in the finch family. The Eurasian siskin ("Spinus spinus") is a small passerine bird in the finch family Fringillidae. The Eurasian siskin is occasionally seen in North America. The red siskin ("Spinus cucullatus") is a small passerine bird. The main call is a "tee-ee", quite similar to the Eurasian siskin ("Spinus spinus"). On 27 August 1928, Pilot Officer Whittle joined No. 111 Squadron, Hornchurch, flying Siskin IIIs. The European siskin, in many plumages, is a bright bird. II, flying them until they were exchanged for Armstrong Whitworth Siskin Mk. In 1924, it began receiving the first Armstrong Whitworth Siskin III biplanes. The ground colour of the underparts of European siskin is normally pure white. These students have come to be known by the sobriquet "siskin", . The label featured a small bird called a siskin. It was directed by Matthew Daniel Siskin. It is also called the European siskin, common siskin or just siskin.