. The birds of Illinois and Wisconsin. Birds; Birds. 170 Field Museum of Natural History—Zoology, Vol. IX. Family Flycatchers. * GROUP 1. Wing, to inches long. Bill, broad and flattened, with numerous small black bristles at base of upper mandible; tip, with small but distinct hook; tarsus, rounded, not flattened and sharp at the back as in the Top of bill. Side of bill. First primary shorter than fifth; bill, with small hook at tip, flat and wide at base; back, olive green; belly, not yellow, or only faintly tinged with yellow; eye ring, whitish. Empidonax minim
. The birds of Illinois and Wisconsin. Birds; Birds. 170 Field Museum of Natural History—Zoology, Vol. IX. Family Flycatchers. * GROUP 1. Wing, to inches long. Bill, broad and flattened, with numerous small black bristles at base of upper mandible; tip, with small but distinct hook; tarsus, rounded, not flattened and sharp at the back as in the Top of bill. Side of bill. First primary shorter than fifth; bill, with small hook at tip, flat and wide at base; back, olive green; belly, not yellow, or only faintly tinged with yellow; eye ring, whitish. Empidonax minimus. Least Flycatcher. See No. 215. Back, olive green; belly, clear yellow. Empidonax flaviventris. Yellow-belUed Flycatcher. See No. 212. GROUP 2. Wing, to inches long. First primary, about as long as fifth; under mandible yellowish white; throat, dull white; breast and belly, dull white, tinged with pale yellow; back, olive green. Empidonax virescens. Green-crested Flycatcher. Acadian Flycatcher. See No. 213. Under mandible, yellowish white; throat and under parts, yellow or greenish yellow; back, olive green. Empidonax flaviventris. Yellow-bellied Flycatcher. See No. 212. *For directions for measurement, see page Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cory, Charles B. (Charles Barney), 1857-1921. Chicago
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