TT #145 · Parshas Shemini · Aliyah 6 · Passuk 19
Chabad.org — Vayikra Chapter 11 with Rashi
English: the stork; the various kinds of heron; and the hoopoe, and the bat.
Chullin 63a.
E-Daf.com — Chullin 63a (Tsurras Hadaf)
וְאֶת הַדּוּכִיפַת. אָמַר רַב יְהוּדָה, לָמָּה נִקְרָא שְׁמָהּ דּוּכִיפַת? שֶׁהוֹדוֹ כָפוּת.
Wordplay — The name dukifat is explained as referring to the bird's crest or appearance being folded.
The duchifat's name is explained from the distinctive way its crest is folded.