TY - RPRT TI - Variation in incubation periods and egg metabolism in mallards: Intrinsic mechanisms to promote hatch synchrony AU - Margaret C. MacCluskie AU - Paul L. Flint AU - James S. Sedinger PY - 1997 DO - 10.2307/1370245 UR - https://pubs.usgs.gov/publication/70182057 ID - 70182057 ER -