3G8 



ANNUAL REPORT SMITHSONIAN INSTITUTION, 1921. 



Species. 



Place. 



Crossbill 



Corn-buntings. 



Rossitten . 

 Palestine. 



Calandra lark 



Hod-throated pipil 

 Do 



do 



East Africa. 

 Palestine 



Ground 



speed 



(miles per 



hour). 



Pipits... 

 Wagtails. 



Tuscar Itoek . 

 East Africa. . . 



Do.. 

 Swallow 



do.. 



France . 



Do. 



Do. 



Swifts . . 



Roller. 



Lanner falcon. 

 Kestrel 



Do 



Do....... 



Marsh-harrier. 



Do 



Lammergeier . 



Do. 



White Stork. 



Grey heron. 



Gannets 



Pelican 



Geese. 



Do 



fleese and duck. 



East Africa... 



do 



Mesopotamia. 



East Africa... 



South Palestine . . . 

 East Africa 



....do.. 



....do.. 

 Quetta . 



South Palestine. 

 Quetta 



Italy. 



Mesopotamia. 



France Under '45 



Eastbourne ' 48 



South Palestine .. . 51 



(?)■ 



France 



Mesopotamia. 



41.3 



155 

 42-48 

 Slightly 

 faster. 



Remarks. 



37.5 

 29j 



34 



26.5 



20} 



20 

 30.1 



29 

 100 



37| 

 34 

 Over 68 



3S.7 



48 

 40J 



43.9 



22 



31,36 



37i 



79} 



> 111) 

 '48 



(Thienemanu.) 

 Birds flying to water. 



Birds coming from 



(See note 



Average of 2 observations. 



Average of 2 observations. 

 (See note E.) 



Average of 3 observations, 

 water. (See note E.) 



Altitudo of flight 210 feet. Wind calm. 

 B.) 



Birds coming to water. Average of 2 obscrvat tons. 

 (See note E.) 



(Patten, Zoologist.) 



Altitude of flight 160 feet. Slight following wind. 

 (See note B.) 



Altitude of flight 240 feet. Calm. (See note B.) 



A swallow was taken from Roubaix to Paris, dis- 

 tance 160 miles, and returned to Roubaix 90 min- 

 utes after its liberation. (Zoologist, 1887, ex 

 Globe.) 



Altitude of flight 235 feet. Wind calm. (See 

 note B.) 



Flying at ground-level. Strong head wind. (See 

 note B.) 



Large flock at 6,000 feet, feeding over Mosul. They 

 circled round machine and easily overtook it. 

 Fl3 - ing speed 68 miles per hour. (R. A. F.) 



Altitude of flight 720 feet. Slight head wind. (See 

 note B.) 



Bird not hunting. (See note E.) 



Altitude of flight 210 feet. Weather calm, 

 note B.) 



Altitude of flight 310 feet. Weather calm, 

 note B.) 



Altitude of flight 150 feet. Strong head wind, 

 note B.) 



Observations on two males hunting. W r eather 

 calm. (See note A.) 



Single bird hunting. (See note E.) 



Gliding to food at angle of 12° to horizontal. Strong 

 side wind. (See note A.) 



Bird nose-diving to escape from a pursuing air- 

 plane. Observation taken with air-speed indi- 

 cator. (R. A. F.) 



Birds on spring passage at 4,200 feet over Bagdad. 

 Birds drew in their necks and legs when machine 

 was near. (R. A. F.) 



By air-speed indicator. (R. A. F.) 

 Do. 



Altitude of flight, 1,240 feet. A side wind of 15 

 miles per hour. (Seo note D.) 



Altitude of flight, 905 feet. Measured by theodo- 

 lite. (Clayton, Science, n. s., vol. v., No. 105.) 



By air-speed indicator. (R. A. F.) 



Frequent observation by air-speed indicator. 

 Birds usually on passage, but all below 3,000 



feet. (R. A. F.) 



(See 



(Sec 



(See 



1 Air speed. 



