Home range, site fidelity, and movements of timber rattlesnakes (Crotalus horridus) in west-central Illinois

Eckert, Scott A.; Jesper, Andrew C.

doi:10.1186/s40317-023-00357-8

Animal Biotelemetry

Table 1 Summary statistics for 51 timber rattlesnake (Crotalus horridus) snake–year combinations from 31 individuals (13 female, 16 male) tracked between 2015 and 2019 at Principia College and surrounding properties in Jersey County, Illinois

From: Home range, site fidelity, and movements of timber rattlesnakes (Crotalus horridus) in west-central Illinois

ID	Year	Sex	Den ID	Mass (g)	SVL (cm)	Track start	Track end	Track length (days)	# Fixes	Days/fixes	Min. Fixes	Prop. HR	Daily Dist. (m)	Max Disp. (km)	Total Dist. (km)	Sig1	Sig2	99% BBMM (Ha)	95% BBMM (Ha)	50% BBMM (Ha)	MCP (Ha)
1113A	2015	M	2	430	79	5/13	10/2	143	95	1.51	32	1.01	21.31	1.77	4.55	0.16	3.00	44.76	28.61	2.33	41.47
1113A	2016	M	2	430	79	5/6	9/2	120	115	1.04	40	1.02	57.83	1.90	7.07	0.44	3.00	126.13	75.87	11.00	121.71
3150A	2016	M	1	2200	126	5/4	10/11	161	145	1.11	113	1.00	90.82	3.49	13.31	0.41	3.00	191.43	128.77	14.70	243.51
65636	2017	M	2	1700	130	4/30	10/9	163	128	1.27	72	1.02	77.50	1.51	9.60	0.35	3.00	99.23	68.22	9.20	73.91
65636	2018	M	2	1700	130	5/16	9/14	122	87	1.40	53	1.02	47.19	1.29	4.43	0.19	3.00	39.31	26.50	3.89	25.62
65808	2017	M	2	1700	137	4/30	10/9	163	122	1.34	67	1.03	67.89	1.90	9.75	0.39	3.00	158.12	107.27	15.16	106.54
65808	2018	M	2	1700	137	5/15	8/30	107	92	1.16	57	1.00	57.03	1.86	5.32	0.34	3.00	78.23	46.82	6.54	46.72
66176	2019	M	1	1230	110	7/1	10/11	103	102	1.01	52	1.04	47.28	2.78	4.74	0.20	3.00	35.66	22.95	2.82	48.25
66248	2019	M	1	1000	100	5/22	10/11	143	136	1.05	126	0.99	46.68	2.78	6.21	0.21	3.00	36.73	19.89	2.43	26.83
66406	2018	M	2	530	92	5/16	10/12	150	80	1.88	41	1.02	49.35	2.13	5.96	0.20	3.00	60.21	34.23	3.80	89.34
66406	2019	M	2	530	92	5/22	10/13	145	136	1.07	83	1.01	42.64	1.96	6.65	0.23	3.00	50.42	26.83	3.52	78.02
7346A	2015	M	3	1680	124	5/13	10/15	156	83	1.88	56	0.99	79.63	1.70	7.93	0.33	3.00	152.18	97.17	16.27	85.34
7346A	2016	M	3	1680	124	5/5	10/10	159	122	1.30	52	1.02	42.11	1.96	9.37	0.23	3.00	106.80	78.46	8.90	103.92
7346A	2018	M	3	1680	124	6/6	10/24	141	131	1.08	106	1.00	72.55	1.86	9.27	0.26	3.00	82.34	55.40	6.27	93.93
7346A	2019	M	3	1680	124	5/22	9/29	131	116	1.13	98	0.98	43.48	1.85	4.97	0.35	3.00	81.40	44.67	6.61	51.16
9263A	2015	M	2	370	80	6/16	9/21	98	73	1.34	37	1.00	41.19	1.11	3.39	0.32	3.00	53.74	33.41	4.74	35.90
9730A	2015	M	2	1450	115	5/13	10/2	143	98	1.46	45	1.02	60.16	1.22	6.50	0.35	3.00	90.72	59.23	8.98	40.92
9730A	2016	M	2	1450	115	5/6	10/8	156	138	1.13	112	1.00	75.03	1.18	11.86	0.36	3.00	86.16	56.92	7.03	97.31
4125A	2015	F	3	790	107	6/10	10/15	128	66	1.94	45	1.02	20.19	1.45	1.99	0.10	3.00	17.97	11.19	1.46	19.59
4125A	2016	F(G)	3	790	107	5/9	10/10	155	128	1.21	82	0.99	10.44	0.85	0.58	0.07	3.00	6.37	3.43	0.15	7.52
62804	2019	F	2	400	73	6/4	10/11	130	127	1.02	80	1.03	21.77	1.33	2.87	0.19	3.00	16.74	10.20	1.66	14.27
62997	2019	F	1	500	81	6/4	10/10	129	127	1.02	50	1.05	22.63	0.99	2.82	0.15	3.00	11.94	6.60	0.85	15.98
63086	2019	F	1	600	91	5/22	9/19	121	117	1.03	64	1.01	16.00	0.61	1.87	0.07	3.00	3.65	2.43	0.32	4.58
65557	2017	F	1	400	94	4/17	9/27	164	131	1.25	110	1.01	28.24	1.42	3.46	0.12	3.00	17.55	11.31	1.18	17.79
65557	2018	F	1	400	94	5/16	10/14	152	94	1.62	48	1.04	33.23	1.91	3.56	0.20	3.00	62.74	37.89	4.28	13.55
65685	2017	F	1	500	91	4/17	7/19	94	79	1.19	48	1.02	46.74	1.97	3.92	0.17	3.00	37.49	25.56	2.97	51.88
65962	2018	F	1	580	84	5/16	10/12	150	142	1.06	100	1.00	14.12	0.47	2.01	0.07	3.00	3.40	2.17	0.26	3.19
66462	2018	F(G)	1	850	97	5/16	10/14	152	139	1.09	45	1.04	20.04	1.15	0.89	0.09	3.00	13.63	7.57	0.45	25.04
66462	2019	F	1	850	97	5/22	10/11	143	130	1.10	38	1.02	42.82	2.56	6.69	0.21	3.00	64.75	41.13	4.03	120.44
66953	2019	F	1	450	85	5/22	10/11	143	140	1.02	70	1.02	15.04	0.49	2.00	0.05	3.00	3.27	2.12	0.24	4.36
7223A	2015	F	1	290	74	5/13	10/13	154	61	2.52	34	1.02	24.22	1.37	3.77	0.13	3.00	54.58	37.46	3.74	30.40
7223A	2016	F	1	290	74	5/9	10/11	156	138	1.13	78	1.01	23.82	0.72	3.93	0.16	3.00	16.44	10.52	1.56	12.00
7223A	2017	F	1	290	74	5/2	9/27	149	116	1.28	81	1.01	38.91	1.19	4.79	0.19	3.00	30.48	19.85	3.31	28.43
9624A	2015	F	1	400	90	5/5	10/13	162	97	1.67	56	1.03	36.56	1.56	5.32	0.16	3.00	42.20	27.69	4.67	40.16
9624A	2016	F	1	650	91	4/23	10/6	167	125	1.34	44	1.02	26.55	1.44	4.79	0.13	3.00	53.11	37.75	3.20	36.64
9624A	2017	F	1	700	92	4/17	9/27	164	141	1.16	79	1.01	25.67	1.44	3.89	0.14	3.00	23.16	15.00	1.82	16.11`
67201	2019	M		1870	112	6/24	7/26	33	27	1.22	–	–	–	–	–	–	–	–	–	–	–
3150A	2015	M	1	2200	126	7/7	10/13	99	46	2.15	–	–	–	–	–	–	–	–	–	–	–
6346A	2016	M		350	85	5/6	6/14	40	34	1.18	–	–	–	–	–	–	–	–	–	–	–
7346A	2017	M	3	1750	144	8/12	10/9	59	35	1.69	–	–	–	–	–	–	–	–	–	–	–
62937	2019	F		400	82	5/22	7/1	41	37	1.11	–	–	–	–	–	–	–	–	–	–	–
5126A	2015	F		190	39	5/13	10/8	149	11	13.55	–	–	–	–	–	–	–	–	–	–	–
7223A	2018	F	1	290	74	9/16	10/14	29	24	1.21	–	–	–	–	–	–	–	–	–	–	–
7223A	2019	F	1	290	74	5/22	5/31	10	9	1.11	–	–	–	–	–	–	–	–	–	–	–
9624A	2018	F	1	450	90	5/17	7/23	68	33	2.06	–	–	–	–	–	–	–	–	–	–	–
9730A	2017	M	2	1800	130	4/30	7/23	85	67	1.27	73	0.95	48.29	0.90	3.11	0.16	3.00	25.85	16.89	1.59	18.24
9623A	2015	M		200	64	5/5	10/13	162	68	2.38	74	0.93	13.78	0.72	1.81	0.11	3.00	49.83	31.07	1.00	5.83
66111	2017	M		2200	123	5/20	7/2	44	41	1.07	77	0.81	39.13	1.35	1.54	0.11	3.00	10.00	6.60	0.66	14.39
6346A	2015	M		350	85	6/10	9/5	88	66	1.33	131	0.80	33.14	1.35	3.18	0.18	3.00	34.90	23.37	1.85	30.22
63175	2019	M		1681		7/19	10/11	85	73	1.16	242	0.59	28.13	2.03	2.55	0.14	3.00	19.61	9.49	0.66	51.02
60248	2018	M		1120	110	5/16	10/14	152	54	2.81	65	0.93	33.29	1.74	3.24	0.17	3.00	110.82	71.57	6.78	12.26

Columns represent: snake ID (ID); year of track (Year); sex and reproductive condition (sex; M: male, F: female), G: gravid); hibernacula (Den ID); snake mass (Mass); snout–vent length (SVL); start (Track start) and end (Track end) date of track; track duration (Track length); number of GPS coordinates (# fixes); average number of days between fixes (Days / fixes); minimum number of fixes required for home range asymptote (Min. fixes); proportion of home range (Prop. HR); mean daily distance (Daily dist.); maximum distance/displacement from hibernacula (Max. disp.); total planimetric distance moved between fixes (Total dist.); first (Sig1) and second (Sig2) smoothing parameter for Brownian bridge Movement Model; 99% (99% BBMM), 95% (95% BBMM), and 50% (50% BBMM) isopleth home range area using Brownian Bridge Movement Model; and Minimum Convex Polygon home range size (MCP)

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ISSN: 2050-3385

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