CORRECTIONS TO MY CHECK-LIST. 
P. 181, No. 539. Add Zosterops lutea montebellomsis Ashby; ib., Monte Bello Islands, Mid.-West 
Australia. 
P. 186, No. 555. Certhia sanguinolenta Latham, 1801, is indeterminable. Bead Myzomela dibapha 
(Latham). 
Oerthia dibapha Latham, Index Omith. Suppl., p. xxxvii., 1801 (after May 30th) : New South 
Wales (Watling drawing No. 108, not 107, and is the Cochineal Creeper). 
P. 191, No. 572. For Olycichcera claudi read Glycichcera fallax clatidi, 
Olycichcera fallax Salvadori, Ann. Mus. Civ. Genova, Vol. XII., p. 335, June 4th, 1878: 
New Guinea. 
P. 199, No. 598. For Xaniliolis flaviveiiter read Xanthotis clirysotis. 
Philedon chrysotis Lesson, Voy. Coquille, livr. 6, pL, 21, March 22nd, 1828. 
P. 203, No. 611. Add to the synonymy Ph, com. var. minor Sassi, Joum. f. Orn., July, 1909, p. 378, 
nude name. 
P. 208, No. 622a. Bead Donacola lepidothorax Caley, Emu, Vol. XXV., pt. 3, p. 133, pi. 26, 
February 11th, 1926; “Northern Territory.” 
Since I first put forward my theory that there were a great many “ islands ” in AustraHa 
(that is to say, that birds from a certain prescribed area differ, in some way, from those that live 
in the surrounding locaUties) I have found many more, as have other ornithologists. I have 
known a small stream mark off birds that are common just across the water, thus making a boimdary 
of an “island.” 
While working up my subject I found that little was known of the life histories of our birds, 
so I sent out a circular in 1907 to very many people in Australia whom I thought able to help 
science by observing the following points;— 
A. — At pi the young bom blind ? If so, how old are they before they are able to see 1 Are they 
born naked or feathered ; if the former how old are they before they get their feathers, and 
how many plumage changes are there before they become adult ? Are they bom able to take 
care of themselves; if not, how old are they before they can ? What is the colour of the inside 
of the mouth ? 
B. —How old are they before they leave the nest, and for how long after do the parents feed them ? 
C. —-Do the young resemble the female for the first year ? Do they get adult plumage first moult ? 
If not, through how many do they go before being fully adult ? 
Nest. —^Where built, height from ground ; do both birds build, if not, which does ? 
does it take to construct 1 Do the birds enlarge it after the young are hatched ? Of what 
material is it built ? 
Number of clutch ; at what intervals are the eggs laid and at what horn 1 Row many 
clutches are hatched in a season ? Is a new nest constructed for a new clutch . What is the 
incubation period and do the birds begin to sit as soon as the first egg is luid, ^ do ^hey wait 
for the complete clutch before doing so 1 Do both birds sit, if not, which . Do both parents 
feed the young, if not, which one does ? 
Are the birds migratory or not; if the former, where do they go ? Are they insectivorous; if 
what is their food ? Are they destructive or useful ? On what trees or shrubs do the birds 
usually five, and what is their song ? 
This resulted in much information being pubbshed in the Emu, as many of the pomts above 
noted were made the special study of some keen worker, and interest was stimu a e as soon as 
information on certain points was requested. 
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