Cuckoo: (Heb. shahaph), from a root meaning "to be lean; slender." This
bird is mentioned only in Lev. 11:16 and Deut. 14:15 (R.V.,
"seamew"). Some have interpreted the Hebrew word by "petrel" or
"shearwater" (Puffinus cinereus), which is found on the coast of
Syria; others think it denotes the "sea-gull" or "seamew." The
common cuckoo (Cuculus canorus) feeds on reptiles and large
insects. It is found in Asia and Africa as well as in Europe. It
only passes the winter in Israel. The Arabs suppose it to
utter the cry "Yakub", and hence they call it "tir el-Yakub";
i.e., "Jacob's bird."