. Birds of Massachusetts and other New England states. Birds; Birds. Method of measuring tail. In measuring the tail when the outer feathers are longest the distance is taken between the inser- tion of the two central quills and the end of the longest outer tail-feather — a measurement longer than the span between the two vertical Diagram op the Head op an Owl showing nostril opening at the front edge of the cere, and the manner of measuring bills of owls and all other land birds in this work, except diurnal birds of prey (hawks, falcons, eagles and vultures) and except where otherwise
. Birds of Massachusetts and other New England states. Birds; Birds. Method of measuring tail. In measuring the tail when the outer feathers are longest the distance is taken between the inser- tion of the two central quills and the end of the longest outer tail-feather — a measurement longer than the span between the two vertical Diagram op the Head op an Owl showing nostril opening at the front edge of the cere, and the manner of measuring bills of owls and all other land birds in this work, except diurnal birds of prey (hawks, falcons, eagles and vultures) and except where otherwise stated in the text. In Part I (Volume I) the bills of water birds are measured by taking the chord of the culmen or ridge from the tip of the upper mandible, to the center of the frontal feathers of the forehead, ex- cept where otherwise stated in the text. In the succeeding parts (Volumes II and III) bills are measured for the most part by taking the chord of the culmen or ridge from the tip of the upper mandible to the point where front center of fore- head (skull) and base of bill meet, as shown above, regardless of the feathers, except where otherwise stated in the text. -WING. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Forbush, Edward Howe, 1858-1929; Massachusetts. Dept. of Agriculture. [Norwood, Ma. : Printed by Berwick and Smith Company]
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Keywords: ., bookauthorforb, bookcentury1900, bookdecade1920, booksubjectbirds
