mong các bác vào giúp em với!!!!

các bác phân biệt giúp em chú này là trống hay mái?????

http://img809.imageshack.us/img809/5695/p1070049b.jpg
http://img694.imageshack.us/img694/3655/p1070051m.jpg
http://img11.imageshack.us/img11/338/p1070054m.jpg
http://img692.imageshack.us/img692/4769/p1070056u.jpg
http://img821.imageshack.us/img821/6243/p1070058b.jpg
http://img442.imageshack.us/img442/3134/p1070066z.jpg
http://img11.imageshack.us/img11/3501/p1070074v.jpg
http://img207.imageshack.us/img207/4857/p1070076b.jpg
http://img600.imageshack.us/img600/9382/p1070084m.jpg
http://img848.imageshack.us/img848/814/p1070085.jpg
http://img607.imageshack.us/img607/8628/p1070086h.jpg
http://img205.imageshack.us/img205/8859/p1070094u.jpg
http://img403.imageshack.us/img403/1205/p1070097w.jpg
http://img571.imageshack.us/img571/8694/p1070098k.jpg
http://img217.imageshack.us/img217/5510/p1070099g.jpg