. Life histories of North American petrels and pelicans and their allies; order Tubinares and order Steganopodes . y the adults, but more probablydepends on its stored fat until it gains enough strength to fly and fish for itself. Plumages.—Doctor Gross (1912) describes the downy young, asfollows: At the time of hatching, the young tropic-bird is to allappearances a ball of fluffy down with its dark colored beak andblack feet standing out in marked contrast to the backgroimd ofwhite. It is only the region about the beak, the underparts, and themiddle of the back which are pure white, for the r
. Life histories of North American petrels and pelicans and their allies; order Tubinares and order Steganopodes . y the adults, but more probablydepends on its stored fat until it gains enough strength to fly and fish for itself. Plumages.—Doctor Gross (1912) describes the downy young, asfollows: At the time of hatching, the young tropic-bird is to allappearances a ball of fluffy down with its dark colored beak andblack feet standing out in marked contrast to the backgroimd ofwhite. It is only the region about the beak, the underparts, and themiddle of the back which are pure white, for the remainder of theplumage, especially the crown, sides of the back and regions of thewings, has a decided tinge of dull gray. Not much change takesplace, except an increase in size, until the 16th day, when the firstfeathers appear in the scapular region; by the end of the 35th daythe wing feathers, including the coverts, are well expanded andnow form, with the scapulars, a continuous band and by the 40thday the young is completely feathered, but down still shows about U. S. NATIONAL MUSEUM BULLETIN 121 PL. 26. Bermuda Islands. A. O. Gross.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbirdsno, bookyear1922
