Chap. 36 (25.) — Birds Which Remain With Us Throughout the Year; Birds Which Remain With Us Only Six or Three Months; Witwalls and Hoopoes
The time during which birds show themselves differs very considerably. Some remain with us all the year round, the pigeon, for instance; some for six months, such as the swallow; and some, again, for three months only, as the thrush, the turtle-dove, and those which take their departure the moment they have reared their young, the witwall2989 and the hoopoe, for instance.