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 BULLETIN OF THE COOPER ORNITHOLOGICAL CLUB. 20 Ardea herodias. GREAT BLUE HERON. Abundant along the whole river. On the Californian shore of the Gulf 3 or 40 miles south of the mouth of the river they were sometimes seen, three or four congregated together on the des- olate shore line. 2r Ardra virescens. GREEN HERON. One was shot about six miles south of Yuma. 22 Nycticorax nycticorax nezqus. BLACK-CROWNED NIGHT HERON. Common along the river and sloughs, from Yuma south to within ten miles of the mouth of the river. 23 Grus mexicana. SANDHILL CRANE. Abundant at a salt flat, Laguna Sal- ada, and often seen along the river. According to the Mexicans they feed in large numbers on the bulbous root of some plant on the over-flowed ground and are numerous according to the abundance of this food. 24 Fulicaamericana. AMERICAN COOT. Common on all the fresh water lagoons and slotighs. 25 Tring'a bairdi. B.aIRD'S SANDPIPER. Abundant along the river and Gulf shore. 26 Ereuncles occidentalis. WESTERN SANDPIPER. A few sandpipers were noted along the Colorado at Yuma. 27 imosajkdoa. MARBLED GODWIT. Abundant on mud shore line about 30 miles below the mouth of the Colorado. A dozen were killed with a single dis- charge of the gun. 28 Xymphemict semipahnata inornata. WESTERN WILLET. Common along the river; often three or four could be seen together on the mud-flats at the water's edge. 29 Yumetius longriroslris. LONG-BILLED CURLEW. Common on the lower river and often seen on the mesa many miles from water. 3o Ae. ffialitis vocfera. KrLLDE'ER. Not uncommon about Yuma and south to salt water in the river. 3r Callipeplag'ambeli. G-aMEL'S PARTRIDGE. Abundant in the river bottom of the Colorado to about ten miles above the mouth. Here the last timber gives way to the wide salt marshes and nmd flats. 32 Zenaidura macroura. MOURNING DOVE. Common in Colorado Valley about Yuma. 33 Cohtmbtfallina passerina pallescens. MEXICAN GROUND DOVE. Two or three individuals were seen a few miles south of Yuma Nov. 27 and Dec. x 3. 34 Uatharles aura. TURKEY VULTURE. Noted about Yuma. 35 Accipiter velox. SHARP-SHINNED HAWK. Noted many times along the river in the thickets of willow and cottonwood. 36 Accipitercooperi. COOPER'S HAwK. A single specitnen was shot by a slough near Yuma. 37 Buteo borealis calurus. WESTERN RED-TAIL. Common over the whole region north of salt water in the river. 38 t3uteo abbreviatus. ZONE-TAILED HAWK. A great fire in the marsh lands and cane-brakes about fifty miles south of the Arizona line Dec. 3, attracted hun- dreds of these birds, undoubtedly to prey upon the abundant cotton rats don), and other rodents driven from their retreats by the heat. Some were cir- cling high in the air, others wheeling or plunging into the dense black smoke. A few individuals of this hawk were seen at Yuma. 39 Aquila chrysetos. GOLDEN EAGLE. A single specimen was seen on the. bank of the Colorado, a short distance above Montague Island. 4o tlcoper(rinus analurn. Duck HAWK. One was observed on the Califor- nian shore of the Gulf'below Montague Island. . 4 t2zlco sfiarverius deserticolus. DESERT SPARROW HAWK. Common every- where along the river. When we were out on the Gulf many miles from land, a male alighted for a moment on the boom of our little schooner. 42 Polyborts cheriwaj,. ? AUDUBON'S CARACARA. A bird I took to be of this