Radnor Lake Wednesday Walks

Spring walks were conducted at Radnor Lake State Natural Area on Wednesday mornings from 7:00-10:00 a.m. in April and May for a 4-6 week period from 1987-2005. The route taken was from the west parking lot at the Visitor Center, up Otter Creek Road to the dam and then clockwise around the lake on the Lake Trail, returning along Otter Creek Road to the parking lot, a total distance of 3.0 miles. At times, some of the ravines and ridges also were censused via the Ganier Trail. The route transverses deciduous edge, various stages of secondary growth, mature deciduous woods, and wooded lakeshore. In the spring period 2000-2005, counts were conducted on 32 Wednesdays. The walks are casual.
Neotropicals on spring Wednesday walks are listed for April-May in the period 2000-2005. Total number of neotropical individuals and total number of warbler individuals are summarized below by year and by date.

YEAR	Date	No. Total Species	No. Neotropical Species/ No. Neotropical Individuals	No. Warbler Species/ No. Warbler Individuals	Remarks
2000	April 12	59	24/235	10/70	N. Rough-winged Swallow (50), Blue-gray Gnatcatcher (50), Cedar Waxwing (50), "Myrtle" Warbler (50), Black-throated Green Warbler (7).
	April 19	66	30/361	14/79	Chimney Swift (200), White-eyed Vireo (8), Red-eyed Vireo (12), Blue-gray Gnatcatcher (30), Blue-winged Warbler (10), Nashville Warbler (7), "Myrtle" Warbler (23), Black-throated Green Warbler (16), Scarlet Tanager (5).
	April 26	73	41/229	17/68	Blue-gray Gnatcatcher (20), Cedar Waxwing (60), Tennessee Warbler (20), Black-throated Green Warbler (13).
	May 3	81	51/267	25/74	Blue-gray Gnatcatcher (50), Tennessee Warbler (15), Chestnut-sided Warbler (5), Black-throated Green Warbler (6), Blackpoll Warbler (11), Scarlet Tanager (5).
	May 10	84	48/327	25/94	Red-eyed Vireo (20), N. Rough-winged Swallow (40), Blue-gray Gnatcatcher (30), Swainson's Thrush (50), Tennessee Warbler (20), Magnolia Warbler (10), Bay-breasted Warbler (6), Blackpoll Warbler (10), Canada Warbler (3).
	May 17	61	39/161	16/29	Great Crested Flycatcher (6), Red-eyed Vireo (14), Blue-gray Gnatcatcher (20), Swainson's Thrush (15), Summer Tanager (5).
2001	April 11	54	25/116	13/39	Blue-gray Gnatcatcher (60), Red-eyed Vireo (7), Nashville Warbler (4), Black-throated Green Warbler (6).
	April 18	54	27/139	13/38	Blue-gray Gnatcatcher (40), Nashville Warbler (4).
	April 25	67	42/330	19/94	Chimney Swift (100), Blue-gray Gnatcatcher (60), Tennessee Warbler (14), Nashville Warbler (6), "Myrtle" Warbler 25, Black-throated Green Warbler (6), Palm Warbler (17), Scarlet Tanager 16.
	May 2	58	35/97	12/34	Red-eyed Vireo (6), Wood Thrush (6), Tennessee Warbler (14).
	May 9	61	19/53	18/39	Blackpoll Warbler (8), Scarlet Tanager (10).
	May 16	53	33/111	13/24	Blue-gray Gnatcatcher (20), Canada Warbler (4).
2002	May 1	73	48/402	22/55	Yellow-billed Cuckoo (7), Red-eyed Vireo (11), Blue-gray Gnatcatcher, (21), Swainson's Thrush (70), Cedar Waxwing (95), Ovenbird (15).
	May 8	69	48/163	21/65	Tennessee Warbler (10), Blackpoll Warbler (12).
	May 15	66	42/176	15/37	Red-eyed Vireo (19), Blackpoll Warbler (7).
2003	April 9	48	14/--	5/--
	April 16	48	19/124	7/14	Blue-gray Gnatcatcher (20).
	April 23	57	30/145	12/37	Blue-gray Gnatcatcher (20, Nashville Warbler (8), "Myrtle" Warbler (32), Palm Warbler (13).
	April 30	69	46/144	20/66	Nashville Warbler (7), Cape May Warbler (6), Blackpoll Warbler (8).
	May 14	51	30/121	11/21	Blue-gray Gnatcatcher (20),Swainson's Thrush (20).
2004	April 7	45	6/60	2/28	Blue-gray Gnatcatcher (15), "Myrtle" Warbler (25).
	April 14	52	16/101	6/26	N. Rough-winged Swallow (34), "Myrtle" Warbler (16).
	April 28	56	29/129	9/34	Black-throated Green Warbler (6), Palm Warbler (7), Rose-breasted Grosbeak (8).
	May 5	62	39/131	18/51	Red-eyed Vireo (10), Black-throated Green Warbler (7), Palm Warbler (9), Blackpoll Warbler (6).
	May 12	54	31/92	11/6	Swainson's Thrush (7), Red-eyed Vireo (6), Indigo Bunting (9).
	May 19	47	21/59	4/6	Red-eyed Vireo (7).
2005	April 13	44	19/27	11/12	Blue-winged Warbler (2), Cerulean Warbler (1), Worm-eating Warbler (1).
	April 20	45	19/--	10/--	Worm-eating Warbler (?).
	April 27	60	33/--	13/--	Blue-winged Warbler (?), Worm-eating Warbler (?).
	May 4	70	42/--	21/--	Blue-winged Warbler (?), Golden-winged Warbler (?).
	May 11	60	36/--	15/--
	May 18	46	26/--	8/--

Fall walks were conducted at Radnor Lake State Natural Area on Wednesday mornings from 7:00-10:00 a.m. in September and October for a 4-6 week period from 1987-2005. The route taken was from the west parking lot at the Visitor Center, up Otter Creek Road to the dam and then clockwise around the lake on the Lake Trail, returning along Otter Creek Road to the parking lot, a total distance of 3.0 miles. At times, some of the ravines and ridges also were censused via the Ganier Trail. The route transverses deciduous edge, various stages of secondary growth, mature deciduous woods, and wooded lakeshore. In the fall period 2000-2005, counts were conducted on 28 Wednesdays. The walks are casual.
Neotropicals on fall Wednesday walks are listed for September-October in the period 2000-2005. Total number of neotropical individuals and total number of warbler individuals are summarized below by year and by date.

YEAR	Date	No. Total Species	No. Neotropical Species/ No. Neotropical Individuals	No. Warbler Species/ No. Warbler Individuals	Remarks
2000	Sept. 13	52	30/94	13/46	White-eyed Vireo (9), Blue-winged Warbler (5), Magnolia Warbler (6), Black-and-white Warbler (8), Canada Warbler (4).
	Sept. 20	48	26/127	13/48	Red-eyed Vireo (6), Cedar Waxwing (40), Tennessee Warbler (9), Magnolia Warbler (15), Black-and-white Warbler (7), American Redstart (8).
	Sept. 27	56	34/292	17/115	Chimney Swift (50), Eastern Wood-Pewee (9), Philadelphia Vireo (7), Cedar Waxwing (48), Nashville Warbler (7), Magnolia Warbler (32), Black-throated Green Warbler (27), American Redstart (13), Scarlet Tanager (6).
	Oct. 4	56	28/93	13/32	Philadelphia Vireo (5), Magnolia Warbler (10), Black-throated Green Warbler (6), Rose-breasted Grosbeak (5).
	Oct. 11	39	13/91	5/52	"Myrtle" Warbler (44).
2001	Sept. 12	44	26/95	13/32	Chimney Swift (40), Black-and-white Warbler (6), American Redstart (6).
	Sept. 26	43	20/129	11/13	Chimney Swift (50), Cedar Waxwing (53).
	Oct. 3	43	20/150	12/33	Cedar Waxwing (100), Black-throated Green Warbler (5), Bay-breasted Warbler (5).
	Oct. 10	36	15/288	9/76	Chimney Swift (200), Tennessee Warbler (26), "Myrtle" Warbler (25).
	Oct. 17	34	9/69	5/62	Tennessee Warbler (12), "Myrtle" Warbler (40), Black-throated Green Warbler (8).
2002	Sept. 11	46	27/81	14/34	American Redstart (5).
	Sept. 18	49	32/95	14/39	Magnolia Warbler (13).
	Sept. 25	45	25/716	13/47	Chimney Swift (600), Tennessee Warbler (8), Magnolia Warbler (12), American Redstart (8).
	Oct. 2	49	27/121	13/43	Magnolia Warbler (14).
	Oct. 9	43	21/171	11/79	"Myrtle" Warbler (50), Black-throated Green Warbler (7).
	Oct. 16	50	21/242	12/175	"Myrtle" Warbler (150).
2003	Sept. 10	39	20/81	11/26	Green Heron (8), Canada Warbler (5).
	Sept. 17	45	25/102	10/21	Canada Warbler (3).
	Sept. 24	48	--	13/25	Black-throated Green Warbler (4), American Redstart (8).
	Oct. 1	44	24/98	13/43	Eastern Wood-Pewee (7), Magnolia Warbler (10), Tennessee Warbler (10), Black-throated Green Warbler (6), American Redstart (6).
	Oct. 8	40	16/80	9/26	Tennessee Warbler (10), Black-throated Green Warbler (6).
	Oct. 15	49	19/85	8/57	"Magnolia Warbler (7), "Myrtle" Warbler (26), Black-throated Green Warbler (13).
2004	Sept.. 17	55	34/100	15/29	Green Heron (8), White-eyed Vireo (6), Black-throated Green Warbler (4).
	Sept. 22	40	27/249	11/35	Swainson's Thrush (14), Cedar Waxwing (105), Magnolia Warbler (11), Black-throated Green Warbler (8), Rose-breasted Grosbeak (5).
	Sept. 29	36	20/73	11/30	Golden-winged Warbler (1), Magnolia Warbler (8).
	Oct. 6	41	22/72	10/25	Black-throated Green Warbler (5).
	Oct. 13	34	13/40	6/29	Tennessee Warbler (6), "Myrtle" Warbler (13).
	Oct. 20	33	6/40	4/24	Cedar Waxwing (20), Tennessee Warbler (6), "Myrtle" Warbler (15).
2005	Sept. 14	29	9/18	4/6	Blue-winged Warbler (2), Magnolia Warbler (2).
	Sept. 21	26	16/60	5/14	Chestnut-sided Warbler (3), Magnolia Warbler (3), American Redstart (4), Scarlet Tanager (3).
	Sept. 28	44	20/57	7/17	Swainson's Thrush (4), Cedar Waxwing (20), Magnolia Warbler (11), Summer Tanager (2).
	Oct. 5	42	21/72	8/25	Nashville Warbler (2), Magnolia Warbler (8), Black-throated Green Warbler (7), Black-and-white Warbler (4), American Redstart (2).
	Oct. 12	43	16/115	6/57	Eastern Wood-Pewee (8), Eastern Phoebe (4), House Wren (1), Gray Catbird (8), Tennessee Warbler (3), Magnolia Warbler (14), "Myrtle" Warbler (30), Black-throated Green Warbler (8), Indigo Bunting (10).
	Oct. 19	29	5/63	2/40	Eastern Wood-Pewee (1), Eastern Phoebe (3), Nashville Warbler (1), "Myrtle" Warbler (39).

Year	No. Surveys	Total No. Neotropical Individuals	Total No. Warbler Individuals
2000	6	1,580	414
2001	6	846	298
2002	3	741	268
2003	4	534	138
2004	6	572	151
2005	6	--	--

Year	No. Surveys	Total No. Neotropical Individuals	Total No. Warbler Individuals
2000	4	697	293
2001	5	731	216
2002	6	1,426	417
2003	5	446	173
2004	6	574	143
2005	6	385	159