May, 1912 SOME NORTH-CENTRAl. COLORADO BIRD NOTES 89

6. Chaulelasmus streperus. Gadxvall. Gadxvall seemed to be the mos! common ducks on Lake John, and quite a number xvere seen. July 6 a female xvas seen accompanied by seven young, perhaps one-quarter groxvn. 7. Querquedula discors. Blue-xvinged Teal. A fexv vere seen on Lake John. 8. Erismatura jamaicensis. Ruddy Duck. A male seen on Lake John. 9. Nycticorax nycticorax n,evius. Black-croxwed Night Heron. While camped at Fort Collins, June 13. several were seen flying overhead, ancl one xvas seen at Lake John July 7. l*ig. 34. NEST OF BURROWING OWL, PLACED IN A DESERTED PRAIRIE DOG HOLE. 10. Fulica americana. Coot. A number of Coots vere seen on Lake John July 6. 11. $teganopus tricolor. Vilson Phalarope. May 19 some txventy-five or thirty xvere seen on a small pond or reservoir at a ranch some txvelve miles southvest of Elbert. Two were seen on a pool in an irrigated meadoxv on the xvay to Red Canyon. June 30; one vas seen on a meadow southeast of Mt. Zirkel (the meadows are irrigated so freely that there are many pools in them); July 20 Durand saxv one near Valden. 12. Recurvirostra americana. Avocet. July 19, xvhile at a small lake