490 DR. p. CHALMERS MITCHELL ON LONGEVITY AND 



. , No. of Av. dur. Max. dur. 



EhAMPHASTID^ (COrti!.). iiidiv. in months, in months. 



Rhampliastos erythrorhynchits (Red- 3 20 35 

 billed Toucan) 



R. tocard (Doubtful Toucan) 2 67 91 



E.toGO (Toco Toucan) 9 44 93 



R. vitellinus (Sulphur-and-white- 2 96-5 105 

 breasted Toucan) 



Pteroglossus, 'wh.ole genus, 20 29 87 



P. inso'iptus (Lettered Aracari) 5 20 30 



F. torquatus (BsiTnded ,, ) 6 35 71 



P. miecZi (Maximilian's „ ) 9 32 87 



Selenidera onaculirostris (Spot-billed 2 20 2o 



Toucanet). 



The Toucans and Aracaris are fruit-eating but partly omni- 

 vorous and flesh- eating birds, with simple intestines, the hind-gut 

 being relatively short and not very capacious. Their viability as 

 shown by maximum and average durations is relatively good. 

 In the period in question they were kept in large cages in a 

 warmed house, without access to the open air. 



P, T.-„„„TT^ I- No- of -^'*^- *1^^- '^BiX. dur. 



V^APITONIDvl!,. jj^^^j^_ jjj mouths, in months. 



J/e^aZcema, whole genus 11 40 122 



M. asiatica (Blue-cheeked Barbet) ... 6 42 104 



M.hodgsoni (Kodgmn'B „ ) ... 1 4 4 



M. virens (Great „ ) ... 4 46 122 



The Barbets have an almost omnivorous diet and have short 

 intestines, the hind-gut being relatively short and uncapacious. 

 Their viability as shown by maximum and average durations is 

 good, and in the period covered they were kept in cages in a 

 warmed house without access to the open air. 



nTTrTTTTT);F '^0. oi Av. dur. Max. dur. 



^^UCULIDA. jj^^.y_ in months, in months. 



Cuculus canorus (Cuckoo) 21 7 38 



Eudynamis orientalis (Black Cuckoo) 5 19 41 



JE. taitensis (Long-tailed „ ) 1 3 3 



Centropus, whole genus 6 20*5 37 



G.phasiamis (Pheasant Coucal) 1 19 19 



G. ruApennis (Indian „ ) 3 22 37 



G. senegalensis (Senegal „ ) 2 18*5 19 



Grotophaga ani (Ani) 5 6 26 



Guira pii'irigua (Guira Cuckoo) 23 25 55 



The Cuckoos are insectivorous and omnivorous birds with 

 relatively capacious hind-guts. Their viability as shown by the 

 maximum and average durations is low, but as is usual the failure 

 has been most complete in the case of the Common Cuckoo. 

 These birds have been kept under different conditions, sometimes 

 with, and sometimes without, access to open air. 



