30 Aves. 
xv. Aves. 
[1921] 
728. — Thienemann, J. xix. Jahres- 
bericht (1919) der Vogelwarte Rossitten 
der Deutschen Ornithologischen Gesell- 
sohaft. J. Ornith. Leipzig 69 1921 pp. 
1-38. 
729. — Thienemann, J. Vogelwarte 
Rossitten. Orn. Monatsb. Beilin 29 
1921 pp. 21-23 93-94. 
730. — Thompson, VV. R. Notes on 
the birds of Alderney. Ibis London 
1921 pp. 415-453 ; also H. B. Alex- 
ander pp. 751-752. 
731. — Thomson, A. L. A critical 
note on the value of bird-marking. 
Brit. Bds. London 15 1921 pp. 140-150. 
732. — Thomson, A. L. Results of a 
study of Bird Migration by the marking 
method. Ibis London 1921 pp. 406-527 ; 
also H. W. Robinson pp. 750-751. 
733. — Ticehurst, C. B. Remarks on 
some Indian birds. Bui. Bt. Orn. Cl. 
London 41 1921 pp. 79-82. 
734. — Ticehurst, C. B. On the 
plumage development of Pterocles 
senegalensis. Bui. Bt. Orn. Cl. London 
42 1921 pp. 9-11. 
735. — Ticehurst, C. B., Buxton, P. A. 
and Gheesman, R. E. The Birds of 
Mesopotamia. J. Bombay N. H. Soc. 
28 1921 pp. 210-250 4 photos. 
736. — Ticehurst, N. F. A contribu- 
tion to Swan history. Bt. Bds. London 
14 1921 pp. 176-179. 
737. — Ticehurst, N. F. On former 
breeding places of the Oystercatcher 
and Black-headed Gull in East Sussex. 
Brit. Bds. London 15 1921 pp. 6-9. 
738. — Ticehurst, N. F. Some local 
Heron History. Hastings and E. 
Sussex Nat. 3 1920 pp. 113-118 148- 
153. 
739. — Tischler, F. Zur Vogelwelt 
des Kinkeimer Sees. Ornith. Monat- 
schr. Magdeburg 46 1921 pp. 129-141. 
740. — Todd, W. E. C. Studies in the 
Tyrannidae. i. A revision of the 
genus Pipromorpha . Proc. Biol. Soc. 
Washington D. C. 34 1921 pp. 173-192. 
741. — Townsend, C. W. The Terns 
of our coast : a retrospect and a pros- 
pect. Bui. Essex Co. Orn. Cl. Salem 
1921 p. 34-37. 
742. — Townsend, F. S. Eggs of 
Coccystes cafer. S. Afr. J. Nat. Hist. 
3 1921 pp. 220-222. 
743. — Tratz, E. P. Ueber des Vor- 
kommen von fiir des osterreichische 
Alpengebiet seltenen Vogeln in den 
Jahren 1919 und 1920. Ornith. 
Monatsber. Berlin 29 1921 pp. 31-33. 
744. — Tratz, E. P. Eine Vogel- 
mumie aus einem Torfziegel. Orn. 
Monatsb. Berlin 29 1921 pp. 89-91 fig. 
745. — Tratz, P. Massensterben von 
Vogeln in folge ernes Schneefelles um 
die Mitte April in den osterreichischen 
Alpcnlandern. Orn. Monatschr. Mag- 
deburg 46 1921 pp. 204-206. 
746. — Tregellas, T. Further notes on 
the Lyre-bird (Menura superba). Emu 
Melbourne 21 1921 pp. 95-103 4 photos. 
747. — ’T. Sant, L. van. Statistische 
onderzoek ingen betreft’ende bet aantal 
eieren per broedsel bij Merel ( Turdus 
merula L.) Zanglijster ( Turdus philo- 
melus Brehm aut. philomelus clarkei 
Hart.) en Groote Lijster ( Turdus 
viscivorus L.). Ardea Leiden 10 1921 
pp. 27-32. 
748. — Tscliusi zu Schmidhoffen, V. v. 
Ein Gedenkblatt au der letzten 
Tiroler Bartgeier ( Gy paid us barbatus). 
Ornith. Beobach. Basel 18 1921 pp. 
177-182 ; also Ghidini, A. pp. 182-183. 
749. — Turner, E. L. The Avocet at 
home. Bt. Bds. London 14 1921 pp. 
194-202 4 photos. 
750. — T[yler] W. M. Obituary : 
Walter Faxon. Auk Lancaster Pa. 38 
1921 pp. 157-158. 
751. — Uchida, S. Notes on two 
stragglers Panurus biarmicus russicus 
and Turdus atrigularis. Tori Tokyo 3 
No. 11 1921 2 figs. 
752. — Uexkiill, J. von. Der Segel- 
fiug. A^-ch. Ges. Physiol. Berlin 187 
1921 p. 25 2 figs. 
753. — Uppeln, K. # Merkwurdiges 
“ Vertrautsein ” der Ringeltaube. Jah- 
resber. Prov. Ver. Wiss. Munster 45 
1917 pp. 81-82. 
754. — Vidgen, H. G. Birds visiting 
Cape York Peninsula and New Guinea. 
Emu Melbourne 20 1921 pp. 227-228. 
