18d Lesser kite regularly seen flying with other birds of prey (8)
26a Tom's problem is essentially the way big girls dance (8)
18d Kestrels - anag 'lesser k(i)t(e) [regularly]'
26a Hairball (tom = cat) - essentially (central) '(t)h(e) (w)a(y) (b)i(g) (gi)r(ls)' + ball (dance)