The Migrant 47:2
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JmuE, 1976 VOL. 47, NO*2 THE MIGRANT A QUARTERLY JOURNAL OF ORNXTHOL , 3- . FIRST PUBLISTXED, JUNE 1930 ', ,' ,.. i ,<, . -<* - .* >, '.+ - , , . , - *. .'>> >. *- -.I- , _=_,. PUBUHED BY SEE ORNITHOLOGICAL SEE EDITOR .........................................................................GARY 0.WUCE RL 7, hx338, Su THE SEASON" EDITOR .... FRED J. ALSOP, m Rt. 6, 302 Ever "STATE COUNT COMPILER- .............................. MOI~RISD. VICE-PRESIDENT, EAST TENN. ...................................... BILL WILUAMS 13 13 Young Ave, Maryvillc, Tena 37801 CE-PRISIDENT, MIDDLE TENN. ............................ PAUL CRAWFORD Route 4, Gallatin, Tenn. 37066 E-PRESIDENT, WEST TENN. ........................ nIANDARLINGTON 3112 GIentinnan'Rd, Memphis, Tenn. 38128 IRECTORS-AT-URGE: EAST TENM. .......................................................................... JON IhVORE 4922 Sarlsota Dr.. Hixson.- * Tcnn....... 37343 MIDDLE TEW. ................................ .. ...................... DAVID HASSLER ,,, , , Box 1, Byrdstown, Tcnn. 38549 WEST ............................................... MRS. C. K. J. 101 St, 38079 1 Churcb - TipmvilIe,- Tenn. CURATOR ........................................................................JAMES T. TANNER Rr. 28, Box 155, Knoxville, Tcnn. 37920 SECRETARY ........................................................... MISS LOUISE JACKSON 5037 Montclair Dr., Nashville, Tam. 3721I TREASWRIR ........................................................... KENNETH H. Dm Rt. I, Box 134-I), OoItewah, Tenn. 37363 Anad dnw $4.00; bsexining, $7.50: Life, $100.00; Stadmt, $5.00; Fnmily. $5.001 (cham mag eallcct additional fm m fowr lofd cxpmsa). Dua, contniurh, and b qnm~arc deductible from Federd immmc and enate tnm. Brick nmbm may k had fm Dr. J~maT. T-r, Rr 2B. Bm 155, Enordille, T- Jm2O. -pond nith h Trrrmrrr fw rubcripim, wmbtnhipa, dmgu of rddrar. THE MIGRANT Published by the Tennessee Ornithological Society, to Record and Encourage the Study of Birds in Tennessee. Issued in March, June, September, and December. VOL. 47 JUNE, 1976 NO. 2 ANNUAL AUTUMN HAWK COUNT In 1975 the T.O.S. Autumn Hawk Count totaled 17,062, with 16,5 10 Broad-winged Hawks. Ow average over the Iast five years was 18,000 hawks. In 1971 a record 422 hours of observation was established, shattering the old record of 369 set in 1974. The hawk count in 1975, however, was nearly 7,000 lower than in 1974. Of the stations giving the five highest counts that year, a1 had lower counts in 1971, a totaI decline at those stations of 13,000. In par- ticuIar, the Mendota Fire Tower had 9,800 fewer Broad-wings, in spite of more hours and more people participating. Chattanooga area stations, on the other hand, had outstanding flights of Broad-wings. The halfway point in the migration came late, on 21 September- Ninety percent of the count accumulated over a period of 15 days, longer than average, which was I1 days for the years 1970-74. Between 15 and 24 September onIy 21 September had a good Broad-wing count. The 90% interval began on 13 September and ended on 27 September (both days were Saturdays). On this basis the Broad-winged Hawk migration was early. All the 90% periods for the five years before 1975 fell between 15 and 30 September. The most remarkable observation in the 1971 season was made by Tom Odorn. Playing tennis in Kingsport, he threw the ball up to serve and spotted 30 Broad-winged Hawks flying south across the sky. The date was 16 August. The 1975 count of Sharp-shinned Hawks was 118, more than double our average for the fiw preceding years. The count at the Rogersville Kyles Ford station on Clinch Mt., probably our best lookout for Sharp-shins, was 65, higher than last year's total for the whole T.O.S. project. The species has been recover- ing after having dropped to below 30% of its 40 years ago, as shown in hawk-migration data. Nearly all the hawk-migration stations in East- ern North America had record counts in 1971- Hawk Mt., Pa. in the last three years, 5,125, 6,791, and 8,232 Sharp-shinned Hawks after 33 years with no counts above 4,500. Our count of 14 Coopers Hawks is a new record for the T.O.S. The total for Red-tailed Hawks was 125, a dacult count to make, because some Red-tails fly up and down the ridges or perhaps pass far out over the valley on the return trip. The 1975 count is the highest we have had except for several 26 THE MIGRA,NT JUNE TABLE 1 ANNUAL AUTUMN HAWK COUNT, 1975 Drrtn Obs Hrs Stetion klt WiMll Sky T Shn C%p AK Others 6/16 Tte Y Kinqsport =[XI B 1-2 1 80 - -- --- 9/1 T Rog Kyles Fd FT 2401 lFJ 1-2 2 68 - -- --- 5 T : Am Kvles Fd P'I 2401 SE o-3 5 65 - -- --- 10 PO 3 kk~i;.pi, -&F 501s -- 3-5 5 - - -- --- 13 G 3 As8d River POC~S 2100 - - - - 1 -2 --- 13 L 6 Unite hk lt lT - 5--WI 1-3 2 72 4 -1 --- Roen Kt Rst Aellg - - -- --a Ai 7 mi N Of Grossv1 60 - 1 - 3b - i Tt Rag Yyl88 FOrd PT 60 1 2- -b- Kendote Firs Twr 55 1 -1 --- is 7 mi N of Crossvl % - -- -b- Tlt Rw Kyle6 BdBT 60 1- --4u H4 Fendote Pire Twr - - --12 -----u - 2 1- --u 68 - -- --" 15 T 9 Rog Kyle8 Pd FT 2401 SE W 1 62 - -- -->" 15 CEF 4 hndotn Fire Twer 3C16 SE 3-6 v 62 - -- --- 70 - -- --- - 2- --- - ---s 2b u . - - - -- --- 9 Dunlap ~irarwsr 2240 - - - - 2 -12b-- 6 7 mi R of ~osxvl1860 v 0-2 5 67 - -- --- 4 Mlssloraery Rid@ - u vO-1 g 72 - -- --- 1% ee.8 River rocks 21GO - - - - - --2b-- 5 colts ht nt FT 1425 5-4 1-3 2 72 4 -1 --- mi B of Crossvl l&O S!2 0-2 3 74 - -- -- - 2 -- sb- 2B bndota Pire Twer 3018 S j 72 - -- --- 8 Dunlep Fire Twer 2240 - - - - 3 -- --- 2 Bead River rocks 2100 - - - - - - - sb- 9 Signs1 Point - Srl-ll 24 4 77 2 -- --- 7 7mi Ii or Crosap1 1860 - - 5 65 - -- --- b Avoatrile Fire Tower 2485 6E 34 5 63 4 -2 --- 7s Rog Kyles Ford PT 24M S-v C-3 4 67.11 -- --6 m HO~S~O~~t mar 4332 s 4 -- --- 8 hrdots FFra Twer 3018 - - 4 h? ; -- --- - Cover Rid~ 2203 - - - - - -- --- - Copher Ridg 2100 - - - - - -- --- 4 Lookout Mt Hi Pt - - --2ab- 8 Sivml mint :<% S;S~-3 0 - - --- -- 6 7 mi A ot Crmsvl 1850 v - 1 - - --- bX - U0k Rock, Foothills Farhey - - - --- -- 5 Avordmls YFrs Tover 2485 W 2-3 1 -1- -- 8* Rog ltgles Ford FT 2401 N-d 0-2 1 E; --a b4u 4 Medw Creek Twsr 2675 - - - - - -3- -- 3 Holston Mt Rsdor 4332 - - 1 70 - --- -- 9% Hendote Fire Tmr 3018 SU 0-3 2 70 4 --- b- 4 bolt R-B, ptbls I'.-u ga 5 50 - --- b- 2 Roc Qles Pard Twer HE 3-5 5 60 - --- -- 2 Pl~MotaPFrs Tower 3016 - - 5 - - --- -- 8 ~ogl(y1es~ord~P2401 Kd2-34 60 9 --- - 4k Ymlrdote Fire Twder 3018 S 0-6 4 72 - --- -5"U 5 Look Rock - IW 3-2 1 --8 -U Ci Rog Kyles FdFT 2401 6v 0-4 2 :5,14 1-3 -3u 6l5 Hendote Flrs Tower 3018 SSE 0-1 2 63 6 - 2"s -a 1 Chatteno~ 7[X1 A2559 - --- -- 1 vbite llak (from belw) 0 5 65 - --- -- 4 Rockwood Ffrs Towr 2W0 - - 5 55 12 - - 3a 5 kndots Fire Tower 3018 6 0-1 5 63 - "t: : Head 3iver rocks 2100 - - - - 1 - - o 2b - s35 50 - --- -- g;F;qedg;;tb~ 1972850 K)PS 3-4 1 65 - -1- -- 7 mite mk FT 1425 lW2 343 50 2 31- -- m 7 mi u or ~ossvl 1960 nE 0-1 4 55 - - -90 b8u 2 Amlorood Bire Puwr 2040 NE 2 J 52 1 Look Rock d4363 - Reg Kylsa Ford PP K65 3 58 11 Holston Kt Redsr S breeze 60 1 &dote Fire Twsr a &5 4 lookout Kt Hi Pt ?; Sknel hint 65 5 hokout Mt 'Pem 60 - 7 mi I at Crcssvl 66 1 'Wdota Fire Tmr 57- -2 70 - 65 - lull Creek Bslls 1800 - - 7 mi N of Crossvl l&O 72 - Roebod Pire Tm2W0 60 - 7 mi E of GmtIlnbuq - - Head River rock8 21110 - 1 7 mi a or CFOSSVI 1&0 Y - ----4e W 4 Tovr -- F16 4 Rochood Fie 35--- --- 87 4 Cm 3 Holatm Rt Rndar 49--- --- 88 5 G 2% Lookout Mt Ki Pt - - - - - -26" 89 5 P 3 krdote Piro Tmr 90 b F 5* Herdots Fire Tower 2---4mbu - 3 - - 2s b llu Hevd River rocks J---s- - lookout Rt HI R Imokout Ut Hi Pt -2--22-f Heed River -3-- --- rocke -1- Wad River r0Ch -31- Ft -I-- sb- +: -,-,- g,- lookout Rt Hi ---I --1 Roe: Kyles Peed FT - - - - - - - 98 11/12 G lY ~esdRiver rocks years in the early sixties when Oliver Irwin was contributing data from Memphis. Gary Bayne added 31 ta the Red-tail count from short watches on Lookout Mountain, Ga., late in the season. It could become our first good atation for studying the migration of the Red-taiIed Hawk. The Marsh Hawk total was 33, also more than double the T.O.S. average for the previous five years. It was an outstanding Marsh Hawk year for nearly all stations reporting to HMANA. We had 21 Ospreys. This beautiful bird began flying by lookout stations in record numbers around 1970, whe? it should have been disappearing because of widespread nesting failures from egg fragility considered to be an effect of insecticides in the adult birds. For several years now, however, Osprey counts have been subsiding at many stations. The effect can be seen in the Osprey data in Table 2. The Tennessee Ornithological Society hawk-migration project is dominated by Broad-winged Hawks.