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قراءة كتاب Additions to the List of the Birds of Louisiana

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Additions to the List of the Birds of Louisiana

Additions to the List of the Birds of Louisiana

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دار النشر: Project Gutenberg
الصفحة رقم: 4

be the Texas Nighthawk, a species not heretofore recorded from Louisiana. On the following day a nighthawk was found perched in a tree near the marsh where the birds had been seen the previous evening. It was collected and likewise proved to be texensis.

Muscivora forficata (Gmelin), Scissor-tailed Flycatcher

The nesting of this species in northwestern Louisiana has been indicated for some time, especially after Wallace noted it at Lucas, in Caddo Parish, on June 16 and July 21, 1942. However, the first authentic breeding record for the state was furnished by a freshly built nest found by Edgar W. Fullilove and myself several miles below Bossier, on July 3, 1945. At least two pairs were found there in a large cotton field in which an occasional pecan tree had been left standing. The nest was in one of these trees, about 25 feet from the ground and far out on the end of a limb. Fullilove informed me that to his knowledge the species had nested in this field for at least ten years and that on numerous previous occasions he had seen both nests and young.

Myiarchus cinerascens cinerascens (Lawrence), Ash-throated Flycatcher

The first record of the occurrence of this species in Louisiana is that of a male collected by Howell at University, on March 20, 1943. On December 23, 1945, I shot a second specimen, a female, on the bank of False River opposite New Roads. When found, both birds were actively pursuing insects and on being skinned, both were found to be very fat.

Empidonax flaviventris (Baird and Baird), Yellow-bellied Flycatcher

Oberholser (op. cit., 394) listed this species as a rare autumn transient, citing one definite Louisiana record for that season. On the contrary, the species is quite regular in fall. Six specimens have been collected at University, one each on September 12, 17, 18, and 28, 1940, October 22, 1942, and September 26, 1943 (Lowery and Wallace). Two others have been taken at Cameron, on October 7, 1943 (Burleigh), and September 2, 1944 (Lowery). There are numerous sight records, but since the species cannot be distinguished with certainty in the field from extremely yellow-plumaged Acadian Flycatchers, none of these is recorded.

Empidonax traillii traillii (Audubon), Alder Flycatcher

This species long has been regarded as an uncommon transient in Louisiana in both spring and fall. However, recent field work has shown the bird to occur regularly and sometimes abundantly in autumnal migration. Forty-one specimens have been collected at University on dates ranging from August 17 to October 5 (Lowery, et al.). Specimens taken by Burleigh at New Orleans on September 27, 1941, and August 23, 1943, are in the Louisiana State University Museum.

Empidonax minimus (Baird and Baird), Least Flycatcher

Oberholser (op. cit., 397) listed this species as an uncommon transient since he had only a few sight records at hand. Since field identification of all eastern empidonaces in fall is open to question, our recent data, based on collected material, are significant. Six specimens have been taken at University on dates ranging from September 15 to October 5, and five at Cameron between July 25 and October 17 inclusive (Lowery, et al.). Another specimen in the collection is that of a bird taken by Burleigh at New Orleans on October 1, 1942. There is, as yet, no unquestionable spring record for Louisiana.

Pyrocephalus rubinus mexicanus Sclater, Vermilion Flycatcher

Oberholser (op. cit., 401) listed only one record for this species, a male observed by H. E. Wallace at University, on February 6, 1938, and shot the next day by me. Since 1938, however, it has been found regularly and frequently at numerous localities in southern Louisiana in winter. At Baton Rouge, for example, an adult male was noted almost daily between October 19, 1941, and January 7, 1942, at a small pond on the University campus. An immature male was seen there also on November 25, 1941, but not thereafter. In the following autumn another adult male appeared at the same place on October 23, and was observed regularly until January 15, 1943. Again, an adult male returned to the same area on November 10, 1943, and remained until the middle of January, 1944. W. C. Abbott informs me that for several years one or two individuals have spent the winter at a small willow-bordered pond at his home near Hopevilla, Iberville Parish. Like the individuals noted at Baton Rouge, Abbott's birds arrived in October or November and remained until the following January or February. H. B. Chase, Jr., noted two individuals at City Park Lake in New Orleans in the winter of 1944-45, and three at the same place in the winter of 1945-46. I have seen the species frequently in Cameron Parish, in southwestern Louisiana, where six specimens have been collected on dates ranging from November 4 to January 22. Atwood (Auk, 60, 1943: 453) has also recorded its presence near the Laccasine Refuge in Cameron Parish. An immature male was obtained at False River, near Lakeland, in Pointe Coupee Parish, on November 8, 1942 (Burdick). E. A. McIlhenny writes me that he has seen the species many times at Avery Island and recently he sent me a skin of an adult female which he collected there on October 25, 1945 (also cf. McIlhenny, Auk, 52, 1935: 187). From these data it is evident that the Vermilion Flycatcher is now a regular winter visitor to southern Louisiana.

Troglodytes troglodytes pullus (Burleigh), Southern Winter Wren

A rather large series of Winter Wrens, all taken later than the date of publication of Oberholser's book, includes three specimens of this race and provides an addition to the state list. Two of the specimens are males collected at Baton Rouge on November 23 and December 21, 1943 (Burleigh), and the other is a male shot at the same place on January 23, 1944 (Burdick). Several additional specimens in the series are noticeably darker than the average hiemalis and may have migrated from a zone of intergradation.

Turdus migratorius nigrideus Aldrich and Nutt, Newfoundland Robin

The only two records for the occurrence of this race in Louisiana are those of specimens taken at Baton Rouge on February 1, 1937, and February 9, 1946 (Lowery).

Hylocichla ustulata swainsoni (Tschudi), Eastern Olive-backed Thrush

Hylocichla ustulata almae Oberholser, Alma Olive-backed Thrush

Only four Louisiana specimens of the Olive-backed Thrush were available to Oberholser in 1938. He identified two as swainsoni and two as almae. We have since collected twenty-five specimens in the state, seven of which are definitely almae. Of the remaining, all are clearly swainsoni with the exception of a few that appear intermediate in color. The specimens of almae were collected at Cameron, Baton Rouge, and Baines on dates ranging from April 26 to May 16 and from September 29 to October 6. The specimens of swainsoni were taken at New Orleans, Port Hudson, Baton Rouge, and Baines between April 20 and May 16 and between September 12 and October 28.

Hylocichla fuscescens salicicola Ridgway, Willow Thrush

Oberholser (op. cit., 474) recorded this race as a rare spring transient on the basis of two records. However, eleven out of twenty-three recently taken specimens are referable to salicicola, indicating that salicicola and fuscescens possibly occur in approximately equal numbers, in both spring and fall. The dates on which salicicola have been collected range from April 22 to May 16, and from September 14 to 27. They were taken at Cameron, Port Hudson, Baton Rouge, University,

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