36 



THE OOLOGIST 



seasons have been canvassed and my 

 observations have brought forth fifty- 

 four individual cases, forty having 

 been found in New Jersey, five in New 

 York, seven in Pennsylvania, and two 

 in Connecticut, where the least time 

 was spent. 



In 1903 five sets were located con- 

 taining these eggs, viz.: 



Blonmfield, N. J., May 26th. Yellow 

 Warbler, set of four and one. All 

 young were reared successfully. 



Bloomfield, N. J., June 8th. Red- 

 start, set of four and two. This set 

 was destroyed by several small boys 

 on the morning of June 12th. 



Pompton, N. J., June 4th. Red-eyed 

 Vireo, two sets of four and one. First 

 brood reared successfully. Second 

 brood destroyed by a Sparrow Hawk 

 on June 18th. Both of these sets were 

 well incubated when discovered. 



Middletown, N. Y. Yellow-throated 

 Vireo, set with four and one, May 28th. 



In 1904 seven sets were observed: 



Bloomfield, N. J., June 1st. Yellow 

 Warbler, two sets with four and one. 

 In first case two Warblers and the 

 Cowbird were reared. In second case 

 the parents rebuilt nest covering up 

 their own and parasitic egg and finally 

 laid set which they reared successful- 

 ly. 



Warbling Vireo, June 7th, set of 

 three and one. On June 20th found two 

 Vireos and Cowbird in nest. Other 

 ones' body underneath on ground. 



Red-eyed Vireo, June 6th. Set with 

 three and one. All young reared suc- 

 cessfully. 



Red-eyed Vireo. June 5th and 8th. 

 Two sets of three and one. First 

 reared successfully. Second destroy- 

 ed by several Blue Jays on 10th. 



Great Notch, N. J. Yellow Warbler, 

 set of four and two. On June 2d. 

 On June 8th found to contain two 

 Warblers and one Cowbird about a 

 day old. No trace of other three eggs. 



Midvale, N. J., June 3d. Redstart, 

 one set of four and one. On June 15th 

 this nest contained full quota of young 

 in healthy condition. 



Haskell, N. J. Yellow-throated Vireo, 

 June 3d. Deserted nest of this spe- 

 cies with two Vireo and one Cowbird 

 all of which were cracked and contents 

 spilled. 



Suffern, N. Y., Indigo Bird, May 

 30th, with three and one. 



North Water Gap, Pa., June 12th. 

 Yellow Warbler. Set of four and one. 

 Female Cowbird on nest when discov- 

 ered. Both parent Warblers endeav- 

 oring to drive off intruder. 



In 1907 only three sets were located: 



Montclair Heights, N. J. Maryland 

 Yellowthroat. Set of three and one. 

 On June 2d. On June 11th found this 

 nest to contain only the young Cow- 

 bird which both Yellowthroat parents 

 were supplying with a ready supply 

 of food. 



Midvale, N. J. Yellow Warbler, 

 May 30th. Set of four and one. On 

 June 10th nest contained full quota 

 of young in healthy condition. 



South Orange, N. J. Redstart, May 

 28th. Set of three and two. Did not 

 visit this nest again. 



In 1908 six nests were located: 



Bloomfield, N. J., June 4th. Yellow 

 Warbler. Set of three and two. This 

 set was destroyed on the morning of 

 the 6th by a black snake. Red-eyed 

 Vireo, June 8th. Set of three and one. 

 This brood was reared successfully. 



Pompton Lakes, N. J. Indigo Bird, 

 June 34. Set of four and one. On 

 June 15th parent Indigo Birds were 

 feeding the Cowbird, all remained of 

 the brood in the nest. 



Mountain View, N. J. Yellow-throat- 

 ed Vireo, June 7th. Set of four and 

 one. Did not re-visit this nest. 



Nyack, N. Y., June 2d. Set of four 

 and two of Yellow Warbler. On June 

 12th this nest contained two Warblers 

 and Cowbird about two days old. 



