Introduction: Migi-ation. 
49 
.... , 7 • e the Rails Hypotaenidia pkUippensis, Amaurornis 
and NycUcora. f «/ladic” for wandering Australian 
buds denotes an initiatory form of migration not of a -S">“ 
racter, but, as is shown by the above species, a J 
habits is s^etimes found as high as in many specres of the noithein hemrspb 
The return-wation. - Birds do not appear always 
the route pitrsned in autumn, often, apparent y, eing rare season, 
season in Ltriots through which they pass in abundance rn the other season 
Birds ivhick stat/ behind in their winter quarters. — ^ar In the 
common occurrence for a few '”*''‘'*,''!‘’® *°aa*sLcie*s° which have been found 
winter resorts of the species. Among e e breeding localities in 
in the island after their fellows have epar e -![{r».Qns ornatus, Motacilla 
the North, or, respectively, the South, may e ^ curonka, Tetanus glottis, 
Jiava, Charadrius fidvus, Aegiahtis geop’oyi, . l.prollis Numenius variegatus. 
T. glareola, Heteractitis irevipes, Tnnga acwmna «, rn-obablv be added; the 
To these Alotacilla hoarula and Anthus gustavi ;\PaY the Pipit as late 
first has been sent to us from ^ ^ ?! ^the Moluccas and elsewhere 
as May 26‘’^. Other instances of migian s i ^ found in the text, 
at dates when the main body of their species is a Waders of several species 
During his travels in Polynesia Dr. Central Pacific in the summer 
on the Alarshall and Gilbert atolls o leathers” and elsewhere, 
months; and similar observations will be found m Stray loathe 
1 ^ oT, the cause of this violation of the genera 
It is unprofitable to speculate individual iiidgment is prone 
rule, as the possible ® prejudices. Several reasons may 
to select that which conforms best to its ^wi p ^^bind. The following is 
indeed work together in inducing these ® of shedding the remiges varies 
likely to escape general observation, viz. e a- diminished at the 
iu individuals ') and a bird with its powem of fl.ght tto 
spring migration might well hesitate at ^^^^empti ^ J J observers know, 
- a°brok“en wing or leg - may delay an iy the Injured 
one or more sympathetic companions wi , other cases, as, for m- 
one with a devotion equal to that o m^ l^mdle of the Pacific, it may more 
stance, the individuals on the atolls ® ‘ . . other times it looks 
plausibly be supposed that the birds had lost . ^ j 
as if the birds remain behind stmply '^^Lt a certain this, and this 
History it is almost always ,„„etimes possible to show that 
only, is the true explanation, it P been asked in Band, 
some other is an untrue explanatton. Thus, 
1) See pp. 739, 744, 747, 761, 762, ' 
Meyer j. Wig.esworth Birds of Celebes (May 5th 1898). 
