of Murphy-Hanrehan, where there were an

estimated 20 territories in the late 1970's

(Mossman and Lange 1982) and four nests

found in 1980 (Brittingham and Temple

1980); the first reported nesting in Wisconsin

was in 1975. Mossman and Lange (1982)

summarized the recent (since 1940's) increase

of this species in southern Wisconsin, which

is of greater magnitude than the increase in

Minnesota (over 100 Wisconsin records

through 1978), and preceded it by two or

three decades . To the south , in Iowa , this

species also has been increasing (over 40 re-

cords through 1981), the increase occurring

about a decade earlier than in Minnesota

(Dinsmore et al. 1984). Data from Breeding

Bird Surveys (Robbins et al. 1986) indicate

that over its breeding range as a whole, rela-

tive population density of this species re-

mained stable over the period 1965-1979,

while in the eastern part of its range it in-

creased somewhat.

There is no reason to think that Murphy-

Hanrehan Park is or will remain the only

breeding area in Minnesota for this species,

which clearly is expanding northwestward

into this state. The most suggestive recent

record of a possible additional breeding local-

ity was from Carver Park Reserve , Carver

County, where a female was seen in May

1988 in the same general area where a male

apparently was territorial during early June

of the previous year (The Loon 60:93-94) .

A number of other extensive deciduous wood-

lands in southeastern Minnesota (including

Whitewater WMA , Nerstrand Woods, White-

water, Forestville and Beaver Creek Valley

State Parks , among others) might also be

likely sites for the discovery of the next Min-

nesota breeding locality of Hooded Warblers .

Literature Cited

Bart, J. 1977. Impact of human visitations

on avian nesting success . Living Bird

16:187-192.

Borror, D.J. and W. W. H. Gunn. 1985. Songs

of the warblers of North America. Cornell

Laboratory of Ornithology.

Brittingham, M.C . and S.A. Temple . 1980.

Hooded Warblers nesting in the Baraboo

Hills, Sauk County, Wisconsin. Passenger

Pigeon 42:128-130.

Curtis, J.T. 1959. The vegetation ofWiscon-

sin. Univ. Wisconsin Press , Madison .

Dinsmore, J .J . , T.H . Kent, D. Koenig, P.C.

Peterson and D.M . Roosa . 1984. Iowa

birds. Iowa State Univ. Press, Ames .

Fall , B.A. 1985. First Minnesota breeding

record of the Hooded Warbler. The Loon

57:9-11.

Janssen, R.J. 1987. Birds in Minnesota.

Univ. Minnesota Press, Minneapolis .

Mossman, M.J . and K.I. Lange. 1982.

Breeding birds of the Baraboo Hills, Wis-

consin: their history, distribution, and ecol-

ogy. Wise . Dept. of Nat. Res . and Wise.

Soc. for Ornith., Madison .

Robbins, C.S., D. Bystrak and P.H. Geissler.

1986. The breeding bird survey: its first

fifteen years, 1965-1979. U.S. Fish and

Wild!. Serv. Res . Pub!. 157.

Whitcomb, R.F., C.S . Robbins, J.F. Lynch,

B.L. Whitcomb, M.K. Klimkiewicz, and

D. Bystrak. 1981. Effects of forest frag-

mentation on avifauna of the eastern de-

ciduous forest. Pp . 125-206 In R.L.

Burgess and D .M. Sharpe, eds. Ecologi-

cal studies 41: forest island dynamics in

man-dominated landscapes . Springer-Ver-

lag, New York . 4300 29th Ave. S.,

Minneapolis, MN 55406

Spring 1989

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