. 2021 Apr 15;12:637850. doi: 10.3389/fpsyg.2021.637850

Table 2.

Quantitation of different behaviors performed by Indian house crows during mirror self-recognition.

Behavior	Bird	Mirror exposure	CtrBrd	YelHdBrd	YelHdMirr	YlThrMirr	BlHdMirr
Time spent (sec)	HC28	3637	899	962	1099	1340	1401
	HC30	2820	818	1040	1848	1684	2509
	HC32	3160	601	442 (3)^**	1932 (3)^**	1725 (3)^**	1088 (2)^**
	HC33	4099	604 (3)^*	556 (2)^*	1384 (2)^*	914 (3)^*	737 (2)^*
	HC35	5166 (7)^**	891	1518	2628	2902	3648
Calls	HC28	12	0	1	4	3	2
	HC30	20	7	62	61	67	70
	HC32	71	3	0 (3)^**	16 (3)^**	33 (3)^**	7 (2)^**
	HC33	218	5 (3)^*	0 (2)^*	18 (2)^*	15 (3)^*	2 (2)^*
	HC35	251	1 (7)^**	8	24	44	40
Head turns	HC28	381	88	76	148	108	169
	HC30	280	87	76	200	195	294
	HC32	626	107	82	311	210	256
	HC33	372	66 (3)^*	30 (3)^**	75 (3)^**	140 (3)^**	73 (2)^**
	HC35	829 (7)^**	92	223 (2)^*	328 (2)^*	285 (3)^*	458 (2)^*
Search responses	HC28	123	101	95	63	121	98
	HC30	175	87	77	107	137	121
	HC32	249	74	72 (3)^**	92 (3)^**	107 (3)^**	67 (2)^**
	HC33	367	55 (3)^*	33 (2)^*	84 (2)^*	31 (3)^*	44 (2)^*
	HC35	178 (7)^**	65	50	101	63	85
Exploratory/aggressive behavior	HC28	3	12	7	0	0	0
	HC30	17	0	48	11	15	104
	HC32	30	0	0 (3)^**	12 (3)^**	50 (3)^**	64 (2)^**
	HC33	0	0 (3)^*	25 (2)^*	0 (2)^*	0 (3)^*	0 (2)^*
	HC35	252 (7)^**	156	122	68	29	106
Scratching (Directed)	HC28	0	0	1	0	0	1
	HC30	1	1	0	0	2	0
	HC32	0	0	0 (3)^**	0 (3)^**	1 (3)^**	0 (2)^**
	HC33	2	0 (3)^*	0 (2)^*	0 (2)^*	0 (3)^*	0 (2)^*
	HC35	0 (7)^**	0	0	0	0	0
Scratching (Undirected)	HC28	1	0	0	0	0	0
	HC30	2	1	0	0	2	0
	HC32	2	0	0 (3)^**	1 (3)^**	0 (3)^**	0 (2)^**
	HC33	0	0 (3)^*	0 (2)^*	0 (2)^*	0 (3)^*	0 (2)^*
	HC35	0 (7)^**	0	0	0	0	0

For HC33, the experiment had to be stopped since it started pulling at the mirror or board, causing them to fall. The number within the parenthesis indicated the number of trials performed for each condition available for analysis.

^**

Parentheses indicate the number of trials available for analysis in cases where video recordings stopped after 2–5 min.