Arete sae DsUsB*OsN BU L Leet UN if 
VII. 
VIII. 
IX. 
205 
1. Thick-walled, usually in vertical fork of bush or tree........ 
Ss hd. GPP utes Un oar aie rhe ieee Yellow warbler 
2. Thick-walled, usually on horizontal branch of apple or similar 
tree, usually decorated with bits of paper... Least flycatcher 
3. Thin-walled, usually close to trunk of small sapling. . Redstart 
CONTAINING A LAYER OF MUD: 
A. Built in trees: 
1. Of grasses and mud, usually no moss or dead leaves: 
Cm TIOCr 4s INCUCS. GI AMELEIs INISLUG tes 5 ye aele haw eels cele 4 Robin 
b. Over 4 inches inside diameter........... Bronzed grackle 
2. Containing dead leaves, usually moss.......... Wood thrush 
B. Built on buildings, bridges or cliffs: 
1. Outer layer of grasses, mud within: 
(ome Gers 47 iNChes -INsiderllamMetennwe , occ! cide ates Robin 
b. Over 4 inches inside diameter........... Bronzed. grackle 
2. Outer layer of mud, some grasses: 
ee DENEAL LOD CUD -SUADEC eels alors ce se) ces Barn swallow 
Drew) pete ateside-- fOUrd-Shaped aoc cc te cerns + shes Cliff swallow 
Pee UCC AVOrrOrmmOssmwandsMUGs fe sin. alate. © sss d0 sae ots Phoebe 
WITH AN OUTER COVERING OF LICHENS, SADDLED ON BRANCH: 
A. Very small, less than 1% inches outside diameter.............. 
28 dyes BOOS S 0 A ee Ruby-throated hummingbird 
B. Larger, over 1% inches outside diameter: 
leeaV ervedeep, over 1% inches..4 220... 0: Blue-gray gnatcatcher 
Pees low Unde reteceiNCNeS at. e. ss. 6 wes ase ek ke Wood pewee 
MOSTLY OF BARK, FIBERS, AND ROOTLETS, WITH OR WITHOUT HORSEHAIR 
LININGS: 
A. Usually thin, flimsy structures: 
1. Little or no lining, usually in 
te hae DU SIGS gene ere ati. e © oth seas: « Rose-breasted grosbeak 
2. Considerable lining, usually in trees......... Scarlet tanager 
3. Considerable lining, usually in bushes.............. Cardinal 
B. Thick, well-formed, with some cotton or wool: 
MEA LOW tA DOU GEL TIDECNRCCED tate: ores voneya ie 2) 28" r, 20! a0) hss Kingbird 
2. Deeper, about 1% inches, usually with streamers of grass tops 
1 Ae so Pegi aerate eee Cedar waxwing 
. MOSTLY OF GRASSES, ROOTLETS, STRAWS, AND LEAVES, USUALLY WITH 
HORSEHAIR IN THE LINING AND NOT SPHERICAL: 
A. With many leaves, in weeds, ferns or low bushes: 
Peelinidern sinchessinside diameter. . 2 s..4. «2 sti4-0 Indigo bunting 
2. Over 2 inches inside diameter: 
Pa LLACCOLONMIN AL OLULCA VCS cee taro o can he ee coe she's Veery 
DemLiCaves: WOVENr Into. NESty..4..s a5 ss. Yellow-breasted chat 
B. With few or no leaves: 
1. Less than 1% inches inside diameter: 
Tee Licks horsehart. NING cn cts. tare Chipping sparrow 
Pete Lew. NATE, OF NONG ihre. ese ete see Field sparrow 
2. Over 2 inches inside diameter: 
Oe With mary or tewahairs invlining? 22.4.5... . Song sparrow 
DaeN Os DATs. a TOW LlGAVeS on cite cis a ckea ls Yellow-breasted chat 
SPHERICAL NESTS OF GRASSES, BARKS OR FIBERS: 
A. On the ground, very thickly lined with soft grasses........... 
Ee. telefon ehaveneee o tuslape etalon Sia soles ie wie + ele Meadow mouse 
B. In bushes or vines, usually in some old bird’s nest and lined with 
RCV OIER OL WOOL ia iiaee aac tariiehast. -telencn rene Coketeio: sceyecahe © Deermouse 
C. In trees or about buildings: 
1. Of bark and fibers, no lining, usually some leaves or sticks, 
DELON Ola GLOW 6 NOS el ee Fe ce sendetose ws oe 2 Squirrel 
ZoaGrassess lined (with feathers! ....2:. 6.5.4. 62%. House sparrow 
