592 



Mr. J. H. Guruey's Notes on 



from life of this Falcon ; and in 1863 he- again drew for me 

 a portrait of the same individual, which had in the meanwhile 

 attained its adult dress. The followiug is a comparison be- 

 between the plumages of this Falcon in 1859 and in 1863, as 

 shown in Mr. Wolfs two drawings. 



1859. 



1. All the dark markings brown. 



2. The feathers on the crown of 

 the head and nape each with a con- 

 spicuous shaft-mark. 



3. A few slight shaft-marks on 

 the cheeks and sides of the neck. 



4. Each feather of the interscap- 

 ulars and of the lesser wing-coverts 

 brown, with a darker shaft-mark 

 and a white edging; the medium 

 wing-coverts similar but with white 

 bases; the scapulars also similar, 

 but the lower ones with either one 

 or two white spots (when two are 

 present, one being on each side of 

 the shaft-mark); these spots are not 

 confluent with the white edging. 



5. The secondaries and tertials 

 white with three rows of dark bars 

 and a large dark subterminal patch 

 on each feather of the tertials. 



6. The primaries with somewliat 

 extensive dark tips, and, above 

 these, six transverse rows of dark 

 markings, of which the uppermost 

 row is imperfect, 



7. Tail entirely white, except 

 some very sUght indications of rudi- 

 mentary dark bars crossing the 

 shaft-mark of the central rectrices. 



8. Somewhat conspicuous dark 

 shaft-marks on the breast, abdomen, 

 and thighs. 



1863. 



1. All the dark markings brown- 

 ish-black. 



2. These shaft -marks much 

 smaller and less conspicuous. 



3. These shaft-marks gone, leav- 

 ing the cheeks and sides of the 

 neck pure white. 



4. All these feathers pure white, 

 except a slight indication of the 

 dark shaft-mark and a subterminal 

 heart-shaped spot, the latter expand- 

 ing and approaching a crescent- 

 shape on the median wing-coverts 

 and lower scapulars. 



5. A larger portion of each fea- 

 ther of the secondaries and tertials 

 white, the dark markings having 

 diminished in size, especially the 

 subterminal patches on the tertials. 



6. The primaries with the dark 

 tips narrowly edged with white, 

 and, above these, five transverse 

 rows of dark markings, of which 

 the uppermost row is imperfect. 



7. Tail unaltered, except that 

 the rudimentary cross-barring along 

 the shafts of the central rectrices is 

 more distinct and a little more ex- 

 tended. 



8. Upper breast pure white, 

 lower breast and abdomen not 

 shown in the drawing; shaft -marks 

 on thighs decidedly narrower. 



