Frequency just below 6 kHz, good enough for COFL.

Discontinuous phrase 2, like most Warner birds. (Compare to right-most example for COFL.) Tick frequency above 3 kHz, too high for "pure" COFL. Maximun frequency approaches PSFL range. Top not as rounded as previous 2 birds or right-most standard above, hence intermediate. This phrase must be classified as slightly more PSFL-like than COFL-like.

COFL-like intermediate. Frequency barely above COFL standards. Middle note is rather faint for COFL, but it is still louder than the tick.

Intermediate. Terminal frequency a little high for COFL. Absence of break and high terminal frequency suitable for PSFL, but PSFL typically descends in frequency in the middle where this note rises.

The only way to distinguish COFL and PSFL FPNs is frequency, and the frequency of this one, below 7 kHz, is right for COFL.