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 Least Petrel.
Stormy Petrel.
Forked-tailed Petrel. 103. Least Petrel. Halocyptena microsoma. Range.--Pacific coast of America from Lower California to Panama. The Least Petrel is the smallest of this family, in length measuring only 5.75 inches. Their plumage is entirely dark sooty. They have been found breeding on San Benito Island, Lower California, and they probably do on others farther south. The single egg that this bird lays is white with a wreath of fine black specks around one and sometimes both ends. Data.--San Benito Is., Lower California, June 12, 1897. No nest, the egg being simply laid on the bare rock in a crevice. Size 1.00 × .75. Collector, A. W. Anthony. 104. Storm Petrel. Thalassidroma pelagica. North Atlantic Ocean chiefly on the European side, wintering south to New Brunswick. Smallest of the white rumped, black petrels; 5.75 inches in length. White. This species is the originally called "Mother Cary's Chicken" by the sailors. They nest abundantly on many of the islands off the coasts of Europe and the British Isles, laying their single egg either in burrows or crevices among the cliffs. Data.--Coast of County Kerry, Ireland, June 1, 1895. Single egg laid at the end of burrow in a sea cliff. Size 1.05 × .80; white with a wreath of very fine dots about the larger end. Collector, G. H. McDonald. 105. Forked-tailed Petrel. Oceanodroma furcata. Range.--North Pacific from California to Alaska, breeding in the Aleutians. These birds have a plumage of bluish gray, the wings being darker and the underparts lightest. The nests are made in burrows or crevices in the banks. Data.--Uniak Is., Alaska, June 10, 1900. No nest. Single egg laid at the end of a burrow. Several pairs nesting near. Egg white with a fine wreath of purplish black specks about the large end. Size 1.25 × .95.
Page 69 Kæding's Petrel.
Leach's Petrel.
Guadalupe Petrel. 105.2. Kæding's Petrel. Oceanodroma kædingi. This bird is similar to Leach Petrel, but is smaller and the tail is less deeply forked. Its range is from California to Panama breeding on the Revillagigedo Islands off Mexico. 106. Leach's Petrel. Oceanodroma leucorhoa. Range.--North Atlantic and North Pacific Oceans, breeding from Maine and from the Farallones, northward to Greenland and the Aleutians. These are the most common of the Petrels found on our coast; they are eight inches in length, of a sooty brown color, and have a white rump. The forked tail will at once distinguish them from any of the Atlantic Petrels. They nest in burrows in the ground, laying a pure white egg, sometimes with a very faint dusty wreath about the larger end. Size 1.20 × .95. These birds generally take turns in the task of incubation, one remaining at sea during the day and returning at night while his mate takes her turn roving the briny deep in search of food. White. The young are fed by regurgitation upon an oily fluid which has a very offensive odor. This odor is always noticeable about an island inhabited by Petrels and is always retained by the eggs or skins of these birds. They are very rarely seen flying in the vicinity of their nesting island during the day; the bird that is on the nest will remain until removed by hand. Data.--Pumpkin Is., Maine, June 22, 1893. Single egg; nest of a few grasses at the end of a burrow dug in the bank. Collector, J. Lefavour. White, nest stained. 106.1 Guadalupe Petrel. Oceanodroma macrodactyla. This species, which is very similar to the preceding, except for a longer and more deeply forked tail, breeds on Guadalupe Is. Their eggs are white very minutely wreathed with reddish brown; they are, however, nearly always nest stained to an uneven brownish color. Data.--Guadalupe Is., Lower California, March 24, 1897. Single egg laid on a few oak leaves and pine needles at the end of a three foot burrow. Size of egg 1.40 × 1.00. Collector, A. W. Anthony.




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 Black Petrel.
Ashy Petrel. 107. Black Petrel. Oceanodroma melania. Range.--South Pacific, from southern California southward, breeding on the small islands on both coasts of Lower California. They are similar to the Leach's Petrel except that the rump is blackish. Data.--San Benito Is., Lower California, July 23, 1896. White egg laid on bare ground at the end of three foot burrow. Size 1.40 × 1. Collector, A. W. Anthony. 108. Ashy Petrel. Oceanodroma homochroa. Range.--California coast, breeding on the Farallones and Santa Barbara Islands. This species, while not common, nests in all manner of localities on the Farallones, concealing their eggs under any rock or in any crevice that may attract their fancy. Their single white egg is only faintly if at all wreathed with fine dust-like specks of reddish brown. Size 1.15 × .86. Data.--Farallone Is., California, June 12, 1895. Egg laid on sand in crevice at the base of a stone wall; well concealed. Collector, Chester Barlow. 108.1. Socorro Petrel. Oceanodroma socorroensis. Breeds on Socorro, San Benito and Coronado Islands, placing its eggs at the end of burrow. Data.--San Benito Is., Lower California, July 12, 1897. Single egg at the end of a burrow 3 feet in length. Egg pure white very finely wreathed with pale reddish brown. Size 1.15 × .87. Collector, A. W. Anthony.
Page 71 Wilson's Petrel.
White-billed Petrel.
White-faced Petrel. 109. Wilson's Petrel. Oceanites oceanicus. Breeds in the southern hemisphere in February and March and spends the summer off the Atlantic coast as far north as Newfoundland. This species can be distinguished from Leach Petrel by its square tail and from the Stormy Petrel by its large size and yellow webs to its feet. These birds are the greatest wanderers of the genus, being found at different seasons in nearly all quarters of the globe. Their single egg is white. Size 1.25 × .90. 110. White-bellied Petrel. Fregetta grallaria. A small species (length about 7.5 inches) inhabiting southern seas. Recorded once at Florida. General plumage blackish. Upper tail coverts, bases of tail feathers, under wing coverts, and abdomen, white. 111. White-faced Petrel. Pelagodroma marina. Range.--Southern seas, accidentally north to the coast of Massachusetts. This beautiful species is of about the same size as the Leach's Petrel. It has bluish gray upper parts; the whole under parts, as well as the forehead and sides of head, are white. White. These birds have the same characteristics as do others of the species, pattering over the water with their feet as they skim over the crests and troughs of the waves. They are not uncommon in the waters about New Zealand where they breed. Their single eggs are about the same as Leach's Petrel, are brilliant white and are, very strongly, for a Petrel egg, wreathed about the large end with dots of reddish brown. Size 1.32 × .90. Data.--Chatham Is., New Zealand, January 7, 1901. Egg laid at end of a burrow. Collector, J. Lobb. This egg is in Mr. Thayer's collection.




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 TOTIPALMATE SWIMMERS. Order IV. STEGANOPODES TROPIC BIRDS. Family PHAETHONTIDAE Tropic Birds are Tern-like birds, having all the toes connected by a web, and having the two central tail feathers very much lengthened. Yellow-billed Tropic Bird.
Red-billed Tropic Bird. 112. Yellow-billed Tropic Bird. Phæthon americanus. Range.--Tropical regions, breeding in the Bahamas, West Indies and the Bermudas, casual in Florida and along the South Atlantic coast. Dull purplish. The Tropic Birds are the most strikingly beautiful of all the sea birds; they are about 30 inches in length, of which their long slender tail takes about 20 inches. They fly with the ease and grace of a Tern, but with quicker wing beats. They feed on small fish, which they capture by darting down upon, and upon snails which they get from the beach and ledges. They build their nests in the crevices and along the ledges of the rocky cliffs. While gregarious to a certain extent they are not nearly as much so as the Terns. The nest is made of a mass of seaweed and weeds; but one egg is laid, this being of a creamy or pale purplish ground color, dotted and sprinkled with chestnut, so thickly as to often obscure the ground color. Size 2.10 × 1.45. Data.--Coney Is., Bermudas, May 1, 1901. Nest made of moss and seaweed in a crevice on ledge of cliff. Collector, A. H. Verrill.
Page 73 113. Red-billed Tropic Bird. Phæthon æthereus. Range.--Tropical seas, chiefly in the Pacific Ocean; north to southern California. Pale purplish. They breed on several islands in the Gulf of California. This species differs from the preceding in having a red bill, and the back being barred with black. Their plumage has a peculiar satiny appearance and is quite dazzling when viewed in the sunlight. They are strong fliers and are met with, hundreds of miles from land. They often rest upon the water, elevating their long tails to keep them from getting wet. They nest, as do the preceding species, on rocky islands and are said to also build their nests in trees or upon the ground. The single egg that they lay has a creamy ground and is minutely dotted with chestnut. Size 2.40 × 1.55. Data.--Daphone Is., Galapagos Is., South Pacific, March 6, 1901. Egg laid in hole of a sea cliff. The eggs are easily told from those of the yellow-billed by their much larger size. Collector, R. H. Beck. Pale purplish ground color. 113.1 Red-tailed Tropic Bird. Phæthon rubricaudus. Range.--Tropical regions of the Pacific and Indian Oceans, accidental off the coast of Lower California. This is a singularly beautiful species resembling the latter except that the central tail feathers are bright red, with the extreme tips white. During August and September they breed in large colonies on small islands in the South Seas. On Mauritius Island they build their nests either in the trees or place them on the ground; the nest is made of seaweed, sticks and weeds; numbers of them nest on Laysan Is., of the Hawaiian group, concealing their nests on the ground under overhanging brush. The single egg has a pale purplish ground speckled with brown.


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 GANNETS. Family SULIDAE Blue-faced Booby.
Blue-footed Booby. Gannets are large stoutly built birds, having the four toes joined by a web; they have a small naked pouch beneath the bill; the bill is a little longer than the head, and the tail is quite short. The plumage of the adults is generally white, that of the young grayish. 114. Blue-faced Booby. Sula syanops. Range.--Widely distributed in the tropical seas, north casually to Florida and breeding in the Bahamas. Like the rest of the Gannets, this one is stupid and will often remain on the nest until removed with the hand, merely hissing at the intruder. Often they lay their eggs on the bare ground, but sometimes the nest is lined with seaweed or grass. They lay either one or two eggs early in April. These eggs are of a dull white color and are heavily covered with a chalky deposit. Size 2.50 × 1.70. Data.--Clarion Is., Mexico, May 24, 1897. Nest a mere hollow in the sand near the beach. Collector, A. W. Anthony. 114.1. Blue-footed Booby. Sula nebouxi. Range.--Pacific coasts and islands from the Gulf of California southward to Chili. These birds nest in numbers on the island of San Pedro Martir in the Gulf of California. They lay but a single egg, placing it upon the bare rock. Their breeding season extends from the latter part of March into May. The egg is a dull white, generally nest stained and is covered with the usual chalky deposit. Size 2.35 × 1.60. Data.--Clarion Island, Mexico, May 21, 1897. Two eggs in a hollow in the sand near the beach. Collector, A. W. Anthony.
Page 75 Booby.
Red-footed Booby. 115. Booby. Sula leucogastra. Range.--Tropical coasts and islands of the Atlantic; north casually to Georgia. Chalky bluish white, nest stained. The common Booby is an abundant bird on some of the islands of the Bahamas and Bermudas; it is commonly called the Brown Booby because the upper parts are of a brownish gray. These birds, as do the other Gannets, have great powers of flight and without apparent effort dart about with the speed of an arrow. They are quite awkward upon their feet and are not very proficient swimmers. They rarely rest upon the water except when tired. Hundreds and sometimes thousands of them breed in company, laying their eggs upon the bare rocks. Sometimes a few sticks or grasses will be placed about the bird to prevent the eggs from rolling away. They generally lay two eggs, chalky white and nest stained. Size 2.40 × 1.60. Data.--Key West, Bahamas, April 14, 1891. No nest; two eggs laid on the bare rocks. 115.1. Brewster's Booby. Sula brewsteri. Range.--Pacific coast from Lower California southward. This Gannet replaces the common Booby on the Pacific coast. It nests abundantly on many islands in the Gulf of California, and in company with the blue-footed variety, on San Pedro Martir Island. They generally lay two eggs, placing them upon the bare rocks and surrounding them with a ring of sticks and seaweed to keep them in place. The eggs are chalky white and cannot be distinguished from those of the other Boobies. Data.--San Benedicto Is., Lower California, May 18, 1897. Single egg laid on the sand amid a few blades of grass. 116. Red-footed Booby. Sula piscator. This is another species that is only occasionally taken on the Florida coast. The habits of the birds and their nesting habits are the same as those of the others of the family. Two chalky white eggs are laid. Data.--San Benedicto Is., Lower California, May 18, 1897. Single egg. Nest a few twigs of rank grass. Collector, A. W. Anthony.



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 Ganet Anhinga. 117. Gannet. Sula bassana. Range.--North Atlantic, breeding, in America, only on Bird Rocks in the St. Lawrence. These are the largest of the family, being 35 inches in length. They feed on fish which they catch by diving upon, from the air. When flying their neck is carried fully extended. They rest on the water when tired, the numerous air cells beneath the skin, causing them to sit high up in the water and enabling them to weather the severest storm in perfect safety. The only known breeding place in America is Bird Rocks, where they nest by thousands, placing their nests in rows on the narrow ledges; the nests are made of piles of seaweed, mud and stones. They lay but one egg of dingy white color and covered with a chalky deposit. On St. Kilda Island, off the coast of Scotland, they breed by millions. They are very tame and will frequently allow themselves to be touched with the hand. It is said that thousands of the young are killed by fishermen every year and marketed in Edinburg and other places. Data.--St. Kilda Island, Scotland, June 18, 1896. Single egg laid on a large mass of seaweed on a sea cliff. Collector, H. McDonald.
Page 77 DARTERS. Family ANHINGIDAE 118. Water Turkey. Anhinga anhinga. Range.--Tropical America, north to the South Atlantic States and up the Mississippi Valley to Illinois. Chalky bluish white. Anhingas or Snake Birds are curiously formed creatures with a Heron-like head and neck, and the body of a Cormorant. They live in colonies in inaccessible swamps. Owing to their thin and light bodies, they are remarkable swimmers, and pursue and catch fish under water with ease. When alarmed they have a habit of sinking their body below water, leaving only their head and neck visible, thereby having the appearance of a water snake. They also fly well and dive from their perch into the water with the greatest celerity. They nest in colonies in the swamps, placing their nests of sticks, leaves and moss in the bushes over the water. They breed in April, laying from three to five bluish eggs, covered with a chalky deposit. Size 2.25 × 1.35. Data.--Gainesville, Florida, May 18, 1894. Nest in the top of a button-wood tree, made of leaves and branches, overhanging the water. Collector, George Graham.
PELICAN POND.
Washington Zoological Park.