Vol. 19 No. 1 (1988)

With mist nets and ground traps, we sampled the spring and fall flow of landbirds migrating along Mission Ridge, just southeast of the south tip of San Francisco Bay. Few such studies have been conducted on landbird migration along the Pacific coast of North America. In northern California, the most comprehensive of these is the annotated field list prepared by McCaskie et al. (1979), which graphically presents the relative abundance by months—hence, the timing of migration—of all species known from that area.

The Willow Flycatcher (Empidonax traillii) is a widely distributed summer resident insectivore breeding across most of the United States and southern Canada (A.O.U. 1983). The subspecies of Willow Flycatcher occurring in the arid southwestern United States and extreme northwestern Mexico, E. t. extimus Phillips (1948), has decreased substantially in numbers in the past few decades (Hunter et al. 1987, Unitt 1987).

The known breeding range of the Semipalmated Plover (Charadrius semipalmatus) encompasses coastal Canada and Alaska (including the islands of arctic Canada, Newfoundland, Nova Scotia, and southwestern British Columbia), and the interior of central Canada (American Ornithologists' Union, 1983, Check-list of North American Birds, Am. Ornithol. Union, Lawrence, KS). J. R. Morris (Western Birds 5:22, 1974) reported the first Washington State record after he discovered two pairs of nesting Semipalmated Plovers at Ocean Shores on the central Washington coast in 1973.

The Great Blue Heron (Ardea herodias) has been common in western Washington throughout recorded history (Jewett et al. 1953). Shipe and Scott (1981) surveyed Great Blue Heron colonies in King County for the Washington Department of Wildlife. In 1983, the Department resurveyed three of the colonies noted by Shipe and Scott. In this paper, I update information on Great Blue Heron colonies in this area.

Northern Waterthrush (Seiurus noveboracensis) has summered and presumably bred in the central Cascade Range of Oregon since 1977. During the 10 years since the first location was discovered, the species has been found in several nearby areas (Figure 1). This note discusses the current status of this Cascade population.

This is a volume of many purposes. Perhaps it is not a great success in any one of them, but in combination, the volume will offer something to many. Because it is a somewhat odd amalgam, it is a volume you may wish to examine before purchasing.