Cassinia, a Bird Annual; Proceedings of the Delaware Valley Ornithological Club of Philadelphia Volume 9

Cassinia, a Bird Annual; Proceedings of the Delaware Valley Ornithological Club of Philadelphia Volume 9

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...one-fifth of the birds lacked one or more flight feathers, this number was insignificant compared to the number showing faulty tails. Not over one-tenth of the birds observed had tails which could be called even approximately perfect. Birds whose tails were fully developed seemed to have the wing feathers equally perfect, but when the tails were only partly grown the wings might be equally backward or perfectly developed, depending, apparently, somewhat upon the growth of the tail, the wings reaching full size first. About one-half the birds with imperfect tails had all the feathers present and of perfect form but one to one and one-half inches long; one-fourth had a short new tail like the above but with one or more of the old feathers sticking far out beyond the end of the new ones; while the remaining one-fourth had tails of every conceivable growth, many being without any tail at all. All the Robins which I observed were in full plumage. No Red-wings have been known to visit the roost with the Grackles but several Screech Owls seem to be entirely at home there. I have heard as many as four calling at once and do not doubt that double this number might be found in the vicinity. The following notes on the evening flights were taken September 17th: 5 p. m.--No birds in sight and none to be heard. Very few birds seem to remain near the roost during the day. 5:35 p. m.--A few small flocks are coming in, but not to any extent as yet. As they arrive they keep up a constant calling and shifting from tree to tree. 5:50 p. m.--A flock of 1,000 just arrived with a great deal of calling and commotion. 5:55 p. m.--Large flight now beginning from the northwest and birds are coming in, in a steady stream. 6 p. m.--Still larger flight from the northwest now...show more

Product details

  • Paperback | 30 pages
  • 189 x 246 x 2mm | 73g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236519426
  • 9781236519429