| OCR Text |
Show 1880.] SPECIES OF ANATID.E. 507 Dates of Hatching of Trumpeter Swans. 1870. 1871. 1872. 1873. July 6th. June 3rd. „ 6th. „ 8th. 1874. May 30th. 1875. June 28th. 1876. ,, 11th. 6. C Y G N U S BEWICKI, Yarrell. Bewick's Swan. Cygnus minor, Gould, B. G. Brit. v. t. 10. Hab. North Palaearctic Region. Bewick's Swan (represented in our series in 1878 and now by a single bird) has never bred in captivity, so far as I know. Two were sold at the Knowsley sale in 1851. 7. CYGNUS DAVIDI, Swinh. Pere David's Swan. Cygnus davidi, Swinh. P. Z. S. 1870, p. 430; David et Oust. Ois. Chine, p. 494. Hab. Northern China. Only yet known by a single specimen at Pekin ! 8. CYGNUS ATRATUS (Lath.). Black Swan. Cyynus atratus, Gould, B. Austr. vii. t. 6. Hab. Australia. The Black Swan is in the first list of living animals given in the Council's Report for 1831 (p. 15). I find records of its having hatched at the following dates, which are of interest, as showing that there is much variation in this respect in an Antarctic species. Dates of Hatching of Black Swans. 1837- May 16th. ,, August 4th. „ 8th. 1838. September 12th. 1839. August 11th. 1840. April 10th. 1841. „ 21st. 1842. „ 21st. 1843. March 20th. 1844. April 16th. 1846. March 31st. 1847. October 24th. The male Black Swan has also mated with the female Common Swan and produced party-coloured hybrids. See Lord Derby's note on this subject, P. Z. S. 1847, p. 97. 9. CYGNUS COSCOROBA (Mol.). Coscoroba Swan. Cygnus coscoroba, Gr. et Mitch. Gen. B. iii. t. 166 ; Scl. etSalv. P.Z. S. 1876, p. 371. Hab. Antarctic America. This beautiful Swan was first obtained by us in 1870 (see 1848. 1849. ,, 1850. 33 1851. 1852. 1860. 1864. 1877. 1878. April 10th. „ 1st. October 4th. March 21st. April 14th. March 2nd. „ 26th. „ 29th. November 11th. March 31st. 11th. |
