aarrgh! I've lost the e-mail with the source! another one from Philippa- it's on page 177 of wherever she found it. I've repeated the tune twice, because there are slight variations for the gaelic and the English. Only the one verse is given in the gif I have; so would probably sing it twice...

X:1
T:Cearc Agus Coileach /A Cock and a Hen
I:abc2nwc
M:6/8
L:1/8
K:D
z4z(D/2 E/2)|F D F G F C|D E F G F G|
w:O!_ cearc ag-us coil-each a d'im-igh ie cheil-e 'S~do
A G A B G E|E F ^G A2(A/2 =G/2)|F D F G E C|D E F G F G|
w:shiul-ad-ar Eir-e gur bris-eadh a gcroi Do_chai-thead-ar seal-ad i Sli-geach i ngeibh-eann, gur
A G A B G3/2 E/2|E D D D2(F/2 G/2)|A d A G F G|A d c d2(c/2 d/2)|
w:chuir-ead-ar sqeal-a i gcoinn-e lucht dli. Do_ bhi siad ann-sin i lar bar-ra 'gus binns, 'S is
e c A (A G) F|E F ^G A2A/2 =G/2|F D F G E C|D E F G F G/2 G/2|
w:duin-e gan cheill_ a chuir ionn-ta sgaol, Gur ag Liam Mhac an Ail-igh a ta siad ar fear-ach, 'Gi-the
A d A B G E|E D D D2z|
w:mon-og-a slei-bhe 's~na gcodl-a 's~a bhfraoch
z4z(D/2 E/2)|F D F G F C|D E F G F G|
w:A_ cock and a hen ram-bled off with each oth-er they
A G A B G E|E F ^G A2(A/2 =G/2)|F D F G E C|D E F G F G/2 G/2|
w:trav-elled all Ire-land a-round and a-bout. But_When they reached Sli-go they met with some both-er, So they
A G A B G3/2 E/2|E D D D2F/2 G/2|A d A G F G|A d c d d c/2 d/2|
w:sent for the law-yers to get them let out.Be-fore ser-geants and jud-ges they took up their sta-tion, But the
e c A A G F|E F ^G A2A/2 =G/2|F D F G E C/2 C/2|D E F G F G/2 G/2|
w:sher-iff stepped for-ward and gave them a fright,so they flew to Mac-Nail-y's where they got an ov-a-tion, Eat-ing
A d A B G E|E D D D2
w:ber-ries all day, with safe roost-ing at night.