Gardaí say that the majority of anglers are careful.
Anglers across Laois and Offaly are being warned of fines and possible imprisonment for harming protected species of birds.
Gardaí have recorded incidents in the two counties of swans and cygnets being caught up in discarded fishing lines, with some instances requiring intervention.
Swans are protected under both national and European legislation.
Gardaí says they are encountered a few 'careless' individuals, but don't want to create any negative feeling towards the general fishing communities in the area.
Over 100 Jobs Created In Laois Following MyPay Contract
New Laois Domestic Violence Refuge Moves To Design Stage
Laois Hurlers To Receive Civic Honour Following Joe McDonagh Cup Success
TUS Research Centre Launches New Breastfeeding Support Toolkit
Dentists Set For Industrial Action This Month
Offaly TD Backs Tighter Citizenship Requirements
Laois Youth Worker Calls For Young People To Have Their Say On Proposed Culture Cards
Calls Made For More Facilities For Young People In Laois