nnot
be distinguished from those of the latter, the nest being most
frequently found in giant cacti.

453a. MEXICAN CRESTED FLYCATCHER. _Myiarchus magister nelsoni._

Range.--Mexico, north to southern Texas.

This species is similar to the last but is considerably paler. They are
common in some localities, nesting in holes in trees or stumps, often
those deserted by Woodpeckers. Their eggs are like those of the last but
average paler. Data.--Corpus Christi, Texas, May 10, 1899. Nest in hole
in telegraph pole; made of red cow hair, feathers and leaves. 4 eggs.
Collector, Frank B. Armstrong.

454. ASH-THROATED FLYCATCHER. _Myiarchus cinerascens cinerascens._

Range.--North America, west of the Plains and south of Canada.

Similar to the others of the genus but grayish brown above and with the
underparts much paler, the throat and breast being nearly white. Like
the others they nest in cavities in trees, either natural or ones made
by Woodpeckers. Their four to five eggs are lighter in color than those
of crinitus but cannot be distinguished from those of the Mexican
Crested Flycatcher.

[Illustration 288: 453--454.]
[Illustration: Pale buff.]
[Illustration: no caption.]
[Illustration: Buff.]
[Illustration: left hand margin.]

Page 287

454b. LOWER CALIFORNIA FLYCATCHER. _Myiarchus cinerascens pertinax._

Range.--Lower California.

This sub-species is similar to Nutting Flycatcher but paler below and
grayish above.

455a. OLIVACEOUS FLYCATCHER. _Myiarchus lawrencei olivascens._

Range.--Western Mexico, north to southern Arizona.

This is the smallest of the genus found in the United States, being but
7 inches in length. Except for size it is similar to _crinitus_ but with
very little, if any, rusty brown on tail, except for a slight edging on
the outer web. Their nesting sites are the same as those chosen by the
other Crested Flycatcher, but their eggs appear to have but little of
the scratchy appearance of the other members. They are pale buffy,
speckled and spotted with brown and lilac; size .80 x .60.
Data.--Toluca, Mexico, May 20, 1895. Nest of brown hair and feathers, in
hole in tree in woods. Collector, Fred T. Francis.

456. PHoeBE.. _Sayornis phoebe._

Range.--North America, east of the Rockies and north to Nova Scotia.

These very common, grayish colored birds are very often known as "Bridge
Birds" because of the frequency with which they construct their nests
under bridges and arch